Acne Scar Treatment Singapore · Subcision · Laser Resurfacing · RF Microneedling · Dr Sin Yong

Acne Scar Treatment & Removal Singapore

Medically reviewed by Dr Sin Yong · Last reviewed · 33 min read · Doctor-performed, never delegated · Jump to questions

Dr Sin Yong · MBBS (NUS) · MRCS (Edin) · MSc Aesthetic Medicine with Distinction (Queen Mary, London) · MSc Practical Dermatology (Cardiff) · International KOL

Acne scars are not all the same — boxcar, rolling, ice-pick and pigmented marks each respond to different treatments. Dr Sin Yong matches the method to the scar, combining subcision, resurfacing lasers, RF microneedling and collagen stimulation to smooth and refine acne-scarred skin.

WhatsApp Dr Sin Yong → Explore Treatments ↓

Acne scar treatment in Singapore starts with identifying the scar type: ice-pick, boxcar, rolling and tethered scars form differently and respond to different tools. Dr Sin Yong matches subcision, TCA CROSS, fractional CO2 resurfacing, RF microneedling and collagen stimulation to each scar on the same face rather than applying one method to all of them. Dr Sin Yong assesses and treats this personally at his clinic at Wheelock Place, Orchard Road, Singapore.

Also called: pitted scars, pockmarks, 痘疤, 痘坑, ニキビ跡

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Key takeaways
  • Acne scar treatment matches a method to each scar type, because ice-pick, boxcar, rolling and tethered scars respond to different approaches.
  • It addresses depressed (atrophic) acne scars; flat brown or red marks are pigment and are managed differently.
  • Suitability depends on scar type and depth, skin type, and whether acne is still active.
  • It can improve texture and depth in many scars but cannot erase every scar or replace surgical revision.
  • Dr Sin Yong, an aesthetic physician, performs treatment personally and refers surgical scar revision on.
On this page
  1. Matching the Treatment to the Scar
  2. Why Acne Scars Need a Tailored Approach
  3. Realistic Results & Downtime
  4. Beyond Acne — Stretch Marks & Other Scars
  5. The Different Kinds of Acne Scarring
  6. Permanent acne scar removal, pitted scar treatment, and what the words promise
  7. Dr Sin Yong explains
  8. What is TCA CROSS, and when is it used for ice pick scars?
  9. Is surgery ever needed for acne scars?
  10. Which laser is used for acne scars?
  11. How Dr Sin Yong approaches acne scar removal
  12. Acne scar fillers: when filler helps rolling scars, and when it does not
  13. What does subcision do for acne scars, and why is it done first?
  14. Who it suits, who should wait, who is referred on
  15. Risks, side effects and when to call
  16. What determines the fee
  17. Which acne scar treatment for which scar type? A quick reference
  18. Why sequencing matters: release, support, then resurface
  19. Go deeper on Acne Scar Treatment
  20. Common planning mistakes with acne scar treatment
Key facts
Scar morphologies
Ice-pick, boxcar and rolling — three different shapes, formed differently, responding to different techniques
Ice-pick
Narrow, deep tracts through the dermis. Depth is the problem, not width
Boxcar
Wide with defined vertical walls
Rolling
Caused by fibrous tethering from below, which is why release rather than resurfacing is the primary approach
Methods combined
Subcision for tethering, fractional CO2 resurfacing for texture, RF microneedling, and collagen-stimulating injectables for volume deficit
Why one device is not enough
A single modality addresses one scar type well and others poorly; most patients present with more than one morphology
Sequence
Active acne is generally brought under control before scar work begins, so acne treatment in Singapore and scar revision are sequenced rather than combined
Featured Treatments
An East Asian woman in her late 20s seated by a tall window — illustrative image
Illustrative image — not a patient.
Acne scar types in cross-sectionFour skin cross-sections showing ice pick, boxcar, rolling and hypertrophic scars, each with the approach usually considered: TCA CROSS, fractional resurfacing or RF microneedling, subcision, steroid injection or silicone.Four acne scar shapes and how each is usually approachedIce picknarrow, deep,V-shaped pitusually approached byTCA CROSSBoxcarwider, sharp edges,flat baseusually approached byFractionalresurfacing orRF microneedlingRollingtetherbroad and soft,tethered belowusually approached bySubcisionHypertrophicraised above theskin surfaceusually approached bySteroid injectionor siliconeMost faces carry a mix; the scar shape, not the brand of device, decides the sequence.
Ice pick, boxcar, rolling and hypertrophic scars in cross-section, with the approach each is usually assessed for.

Not sure which scar type you have? Try the four-question checker →

Matching the Treatment to the Scar

No single treatment corrects every acne scar. Dr Sin Yong draws on a full toolkit, layering methods to address mixed scar types.

4D Scar Reconstruction
Multi-Layer Protocol

4D Scar Reconstruction

A multi-dimensional protocol that addresses acne scars at different depths in one coordinated plan — combining resurfacing, remodelling and collagen stimulation for complex, mixed scarring.

S3 Resurfacing Laser
Resurfacing Laser

S3 Resurfacing Laser

A precision resurfacing laser that refines the skin surface, softening shallow boxcar and rolling scars and improving overall texture and tone.

Subcision
Tethered-Scar Release

Subcision

A technique that releases the fibrous bands tethering rolling scars to deeper tissue, allowing the depressed skin to lift and the surface to smooth.

TCA Paint (CROSS)
Focal Peel

TCA Paint (CROSS)

A focal chemical application applied precisely into deep, narrow ice-pick scars to stimulate remodelling and gradually raise the scar base.

RF Microneedling
Collagen Remodelling

RF Microneedling

Radiofrequency energy delivered at controlled depth to remodel scar tissue and stimulate new collagen — well suited to rolling and boxcar scars with minimal surface disruption.

Radiesse Collagen Stimulation
Biostimulation

Radiesse Collagen Stimulation

A collagen-stimulating injectable used to restore lost volume beneath atrophic scars, supporting the skin from below for a smoother surface over time.

“A rolling scar is tethered from below. Resurfacing the surface of a tethered scar treats the wrong structure.”

Dr Sin YongOn matching method to scar type
Understanding the Problem

Why Acne Scars Need a Tailored Approach

Acne scars form when inflammation from acne damages the skin's collagen. The type of scar left behind depends on how that damage healed. Pitted, depressed scars — the atrophic scars most people mean by acne scarring — divide into ice-pick scars, boxcar scars and rolling scars, each with a different shape and depth. Flat brown or red pimple marks left after a breakout are pigment rather than true scars, and raised keloid or hypertrophic scars are a separate category again.

This is why there is no single right acne scar treatment. A fractional CO2 laser that refines the surface of a boxcar scar does little for a deep ice-pick scar; subcision that releases a tethered rolling scar does nothing for pigmentation. Dr Sin Yong assesses your exact mix of scar types first, then plans acne scar removal around them — so that each scar type is matched to a method suited to it.

Most people who seek acne scar treatment in Singapore have more than one type of scar at once, along with some pigmentation and enlarged pores. A combination plan addresses each of these on its own terms.

Dr Sin Yong’s toolkit is matched to the structure of each scar: subcision for tethers, TCA CROSS for narrow ice-pick tracts, fractional CO2 resurfacing for edges and texture, RF microneedling for boxcar and rolling scars, and collagen-stimulating injectables where volume beneath is lost. Methods are layered and planned as a series because collagen remodels gradually. The sequence he uses is set out on the Scar Repair Programme.

Myths we hear in clinic

“One laser can treat every type of acne scar.”

Different scar shapes form differently, so ice-pick, boxcar and tethered rolling scars each need a method suited to them.

“Brown or red marks after acne are scars that need resurfacing.”

Flat marks are pigment or redness rather than true scars and are treated with different, pigment-focused approaches.

“You can resurface a tethered scar indefinitely. The tether keeps pulling it down.”

Dr Sin YongOn why release comes before resurfacing
What to Expect

Realistic Results & Downtime

Most acne scars can be improved rather than erased: realistic aims are smoother texture, shallower scars and a more even surface, built over a course. Downtime depends on the method, from redness and peeling after resurfacing to bruising after subcision, and active acne is settled first. Method-by-method detail is on acne scar treatment downtime, and the order of acne control, marks and texture on the acne-to-scar pathway.

Other Scars

Beyond Acne — Stretch Marks & Other Scars

The same principles apply to other scars. Stretch marks are dermal scars and respond to the collagen-remodelling lasers, subcision and microneedling used for acne scars; surgical and injury scars are assessed on the same basis, and raised keloid or hypertrophic scars are a separate category. Cellulite is not scarring but is often asked about at the same visit. See stretch mark treatment, scar reconstruction and keloid treatment.

Understand Your Scars

The Different Kinds of Acne Scarring

Acne scars fall into distinct types, each with its own shape and its own most suitable treatment. Tap a scar type to see how it looks and how Dr Sin Yong approaches it.

Skin cross-section
Ice-Pick
Ice-Pick Scars
Deep, narrow scars that taper to a point, like a small puncture into the skin. They are often the hardest to treat by surface methods alone. Dr Sin Yong typically uses TCA Paint (CROSS) to remodel the scar from within, sometimes combined with resurfacing.
Tap a scar type or tab to explore

Acne scar treatment in Singapore starts with matching the method to the scar. Dr Sin Yong treats pitted acne scars including ice-pick, boxcar and rolling scars, as well as flat pigmented acne marks, drawing on subcision, RF microneedling, fractional CO2 laser resurfacing, TCA CROSS and collagen stimulation. Because most people have a mix of scar types, acne scar removal is planned as a combination rather than a single laser, targeting each scar at the right depth for smoother, more even skin over a series of sessions.

Permanent acne scar removal, pitted scar treatment, and what the words promise

Permanent acne scar removal is one of the most-searched phrases in this area, and it overstates what any device can do. A scar is a structural change in the dermis. Resurfacing, subcision and energy-based work remodel that structure; they do not return the skin to a state where a scar was never formed. What is realistic is a change in depth, edge definition and light behaviour, which is what makes a scar read as less visible.

“You can resurface a tethered scar indefinitely. The tether keeps pulling it down.”

Dr Sin YongOn scar assessment

Pitted scar treatment is decided by which pit is present. Boxcar, rolling and ice-pick scars share an appearance to the patient and behave differently under every modality — a rolling scar is tethered from beneath and is a subcision problem before it is a laser problem, while an ice-pick scar is narrow and deep and often answers better to TCA CROSS than to resurfacing. Laser pimple scar removal, as it is commonly searched, is really this sorting exercise followed by the matching tool.

Fotona acne scar work sits alongside the CO2 platforms here rather than replacing them; Dr Sin Yong is an international key opinion leader for Fotona as well as DEKA, and the platform is selected for the scar type rather than for the badge on the machine. Cost follows the plan and is set out at consultation; see what determines the fee.

An East Asian woman in her late 20s seated by a tall window — illustrative image
Illustrative image — not a patient.
Watch

Dr Sin Yong explains

Acne scars are not one thing: narrow, wide and tethered scars need different tools. A short video from Dr Sin Yong’s Instagram, with captions.

Watch on Instagram: Acne scars are not one thing: narrow, wide and tethered scars need different tools.

What is TCA CROSS, and when is it used for ice pick scars?

TCA CROSS places high-strength trichloroacetic acid into the base of each ice-pick scar with a fine applicator, prompting the tract to rebuild from within over several sessions; a small crust forms on each scar and sheds. It suits depth rather than width, so ice-pick and narrow, deep boxcar scars, and is not used across whole areas. The technique is on TCA CROSS for acne scars, and the scar itself on ice-pick scar treatment.

Is surgery ever needed for acne scars?

Surgery is occasionally right for a few individual scars, not a whole face: punch excision, elevation and grafting exchange a deep pit for a flat line or small graft, and the surrounding texture still needs laser or RF work. Dr Sin Yong refers these to a plastic surgery or dermatology specialist and plans resurfacing around them. When surgery is and is not needed is on scar removal surgery vs non-surgical options.

Which laser is used for acne scars?

Acne scar laser treatment usually means fractional resurfacing: ablative fractional CO2, such as the DEKA platform behind the S3 Resurfacing Lift, vaporises fine columns and remodels the dermis; non-ablative lasers heat without removing the surface; fractional pico suits shallow texture in pigment-prone skin. No laser releases a tether or reaches an ice-pick floor. Compare them on subcision vs laser, Fraxel vs CO2 vs Tetra, pico laser for acne scars and RF microneedling for acne scars.

An East Asian woman in her late 20s seated by a tall window — illustrative image
Illustrative image — not a patient.
Acne scar treatment options compared by what each can and cannot do
OptionWhat it doesWhat it cannot doTypical recoveryWho it tends to suit
SubcisionReleases the fibrous bands that tether a rolling scar to deeper tissue, so the depressed skin can lift from belowDoes not resurface texture, soften scar edges or reach narrow ice-pick tractsBruising and swelling over the treated area that settle on their ownRolling scars and boxcar scars with a tethered component
S3 Resurfacing Laser (fractional CO2)Ablative fractional resurfacing that softens scar edges and refines surface texture while the dermis remodelsDoes not release tethering, and is not the primary tool for deep, narrow ice-pick scarsRedness, fine crusting and peeling while the surface renews; strict sun protection afterwardsShallow boxcar scars and mixed texture where edge definition is the problem
RF microneedlingDelivers radiofrequency at a controlled depth to remodel scar tissue with limited surface disruptionDoes not lift a tethered scar on its own and does not treat flat pigmented marksShort-lived redness and pinpoint marksBoxcar and rolling scars, and pigment-prone skin where surface injury is kept low
TCA CROSSPlaces high-strength trichloroacetic acid into the base of each narrow scar to prompt collagen remodelling from withinNot suited to wide rolling scars or to treating a whole area; carries a pigment risk in darker skinA small crust on each treated scar that sheds as the skin healsIce-pick scars and narrow, deep boxcar scars
Radiesse collagen stimulationAn injectable that supports atrophic areas from beneath and stimulates collagen where volume has been lostDoes not change scar edges or surface texturePossible swelling or bruising at injection pointsScars with an underlying volume deficit, usually alongside release and resurfacing
Surgical scar revision (referred on)Punch excision, punch elevation or punch grafting removes or raises an individual deep scar surgicallyDoes not improve surrounding texture, and exchanges a pit for a fine surgical markSutures and wound care set by the operating specialistIsolated scars too deep or wide for TCA CROSS or resurfacing; Dr Sin Yong refers these patients to a plastic surgery or dermatology specialist
RF microneedling mechanismCross-section of skin with insulated microneedles passing through the epidermis; radiofrequency energy is released only from the exposed tips in the dermis.RF microneedling: energy released only at the insulated needle tipepidermisdermissubcutaneous fatInsulated shaft(blue): no energyleaves the needleas it passes theepidermisEpidermis spared:surface is pierced,not heatedExposed tip releasesRF heat in thedermis, wherecollagen sitsNeedle depth is setper area andindicationHeat is delivered beneath the surface rather than through it, which is why the device is depth-adjustable.
Insulated microneedles pass through the epidermis and release radiofrequency heat only at the exposed tip, inside the dermis.

How Dr Sin Yong approaches acne scar removal

Dr Sin Yong begins by sorting each scar by type, including a stretch test to separate tethered scars from surface ones, because the type decides the tool. His acne scar work follows his 4D Scar Reconstruction protocol, which addresses surface texture, dermal depth, subcutaneous tethering and volume deficit in sequence: subcision first to release tethered scars, Radiesse placed into the released space where a volume deficit exists, TCA CROSS for narrow ice-pick tracts, and resurfacing for the scar walls and surface.

The resurfacing step is his S3 Resurfacing Lift on the DEKA Tetra Pro fractional CO2 platform. Rather than a uniform pass across the area, he places precision point-shot ablations into individual scar pits first and then applies fractional passes across the surrounding skin, so the pits are treated at depth before the skin around them is resurfaced. Local anaesthetic is applied beforehand, and parameters are adjusted to the individual skin type, with the risk of post-inflammatory pigmentation in Fitzpatrick III to V skin planned for. Isolated scars that need punch techniques are referred to a plastic surgery or dermatology specialist, and resurfacing is planned around that.

Acne scar treatment plan: decision guideFlowchart: active acne is controlled first; otherwise the dominant scar type routes to TCA CROSS, fractional resurfacing or RF microneedling, subcision then resurfacing, or steroid injection or silicone, with mixed patterns sequenced.Acne scars: how the treatment plan is routedAcne scarring concernIs the acne still active?yesControl the acne first;scar work waits for the skin to settlenoWhich scar type dominates?(most faces carry a mix)Assessed in stretched skin andangled light, scar by scar.ice pickTCA CROSSboxcarFractionalresurfacing orRF microneedlingrollingSubcision first,then resurfacingraised / keloidSteroid injectionor siliconeMixed pattern: sequenced as release, support, then resurfaceRoutes name the assessment, not an outcome. The order and number of sessions are decided at review.
Active acne is controlled first; the dominant scar type then routes to TCA CROSS, resurfacing or RF microneedling, subcision, or steroid injection.

What happens, step by step

  1. Consultation and examination: scars are sorted by type, depth and tethering
  2. Written plan and quote: methods and sequence are set out after assessment
  3. Treatment day: the chosen methods are carried out in the planned order
  4. Review and adjustment: the skin is reviewed as it remodels and the plan is adapted

Acne scar fillers: when filler helps rolling scars, and when it does not

Filler helps a rolling scar only where the tissue beneath it has thinned, and does nothing for the tether, so in the 4D Scar Reconstruction sequence subcision comes first and Radiesse is placed into the released space second. No filler changes scar edges, texture or an ice-pick tract. Why the two are paired, which goes first and who should not combine them is on subcision with filler.

What does subcision do for acne scars, and why is it done first?

Subcision divides the fibrous bands that hold a rolling or tethered scar down so the floor can rise, using a needle or blunt cannula beneath an intact surface under local anaesthetic; bruising and swelling follow and settle. It comes first because resurfacing fixes skin where it finds it, and it does not refine texture or reach ice-pick tracts. The technique is on subcision for acne scars, and its limits on subcision vs laser.

Who it suits, who should wait, who is referred on

Some people are better served by waiting: active, inflamed acne, recent isotretinoin, a current infection or cold sore, a fresh tan or pregnancy each defer scar work, and an expectation that scars will vanish is addressed before anything begins. Isolated scars too deep for TCA CROSS or resurfacing are referred for punch techniques. How acne control, marks and texture are sequenced is on the acne-to-scar pathway.

Tends to suit

  • Depressed ice-pick, boxcar or rolling scars
  • Mixed scar types on the same face
  • Acne that is now quiet or well controlled
  • A realistic aim of smoother, shallower scars

Better to wait

  • Active, inflamed acne, until it is controlled
  • Recent isotretinoin, until the interval is cleared at consultation
  • A goal of completely erasing every scar

Referred on

  • Isolated scars too deep or wide for non-surgical methods → plastic surgery specialist
  • Lesions of uncertain diagnosis → dermatology specialist
Who should not have this treatment
  • Active acne or infection in the treatment area
  • Recent isotretinoin use
  • Pregnancy or breastfeeding
  • Tendency to keloid or raised scarring (weighed before any procedure)
  • Blood-thinning medicines or a bleeding tendency (relevant to subcision and injections)
  • Known allergy to a product, anaesthetic or injectable to be used

People hoping for completely smooth skin, or who still have active inflamed acne, tend to respond poorly, because treatment improves scars rather than erasing them.

Before you book

Risks, side effects and when to call

Expected effects depend on the method: redness, swelling and pinpoint scabbing after resurfacing, and bruising where subcision has been done. These settle as the skin heals. Less often, treatment can cause prolonged redness, darkening of the skin (more likely in deeper skin tones and with sun exposure), infection, or a scar that looks different from before. Injectables carry their own risks, including lumps, which are discussed before they are used. How the skin responds varies between people, and outcomes are never fixed in advance.

Contact the clinic the same day if
  • Pain that increases instead of settling
  • Spreading redness, warmth or pus
  • Blistering or a wound that is not healing
  • Marked swelling or skin colour change after an injectable

See what to do if something feels wrong after a treatment.

Aftercare in brief: keep the skin clean, let scabs fall away on their own, avoid heat, heavy exercise and active skincare until advised, stay out of the sun and restart retinoids only when the clinic says. What each method’s recovery looks like is on acne scar treatment downtime, and the resurfacing checklist on CO2 laser aftercare.

What determines the fee

The fee depends on the area treated, which methods the scar pattern calls for, the consumables or injectables used, the number of zones and whether methods are combined in one plan. A written quote follows examination, which also decides whether treatment is advised at all or acne should be controlled first. How quotes are set at this practice is on how we quote.

Which acne scar treatment for which scar type? A quick reference

Scars on one face often belong to more than one type, so the useful question is which type each scar is, not which laser to book. The table below is a reading aid, not a prescription: it lists how each type tends to look, the approach usually chosen first, what is commonly added and what tends not to work. A tethered scar is one that flattens when the skin around it is stretched, whatever its shape. Dr Sin Yong sorts scars by this kind of examination, including the stretch test, before any method is proposed, and the plan is reviewed as the skin responds.

Acne scar type, first-line approach, usual additions and what tends not to work
Scar typeHow it looksFirst-lineAdjunctWhat does not work
Ice-pickNarrow, deep tract, wider at the surfaceTCA CROSS into each scarPoint-shot fractional CO2Filler; surface resurfacing alone
BoxcarBroad depression with defined vertical edgesFractional CO2 or RF microneedlingTCA CROSS for narrow, deeper scarsSubcision, unless also tethered
RollingWide, soft-edged undulation that flattens on stretchSubcision to release the tetherRadiesse in the released space; resurfacing for textureResurfacing on its own
Tethered (any shape)Flattens when the surrounding skin is stretchedSubcision before anything elseVolume support, then resurfacingLaser or filler over an intact tether
Hypertrophic or keloidFirm, raised scar above the skinIntralesional injectionEnergy-based devices, assessed individuallyResurfacing, which can worsen raised scars
PIH or PIE marksFlat brown or red marks, no change in texturePigment-focused laser with topical careDaily sun protection throughoutResurfacing, which can deepen pigment

How acne scars are graded: the Goodman and Baron scale

Clinicians need a shared way to describe how visible acne scarring is, and the qualitative scale published by Goodman and Baron in 2006 is among the most widely used. It has four grades, based on appearance at a social distance and on whether the scarring can be flattened by manually stretching the skin. It is a description of how scarring looks, not a treatment chooser: two people with the same grade can need entirely different methods, because the grade does not say whether a scar is ice-pick, boxcar or rolling. It is useful for recording how scars are assessed at consultation and for reviewing change later, and it sits alongside the scar-type examination rather than replacing it.

Goodman and Baron qualitative acne scarring grades, with what each means for planning
GradePublished descriptorWhat it means for planning
1Macular: flat red, brown or pale marks, a colour rather than a contour issuePigment- or redness-focused care; resurfacing is not the aim
2Mild atrophic or hypertrophic scars, not obvious at social distance, can be covered by make-upOften managed with resurfacing or RF microneedling, chosen by scar type
3Moderate scars, obvious at social distance, but flattened by stretching the skinThe stretch result suggests tethering, so release is considered first
4Severe scars, obvious at social distance, not flattened by stretchingA layered plan; isolated deep scars may be referred for punch techniques

Why sequencing matters: release, support, then resurface

Acne scar work goes in a deliberate order, and the order is a large part of why it is planned rather than sold as a single laser. In Dr Sin Yong's 4D Scar Reconstruction, the first step is release: subcision divides the tethers that hold scars down (see 4d scar reconstruction). The second is support: Radiesse is placed into the released space where a volume deficit exists, and TCA CROSS is used to rebuild narrow ice-pick tracts from within. The third is resurface: the S3 Resurfacing Lift on the DEKA Tetra Pro refines the scar walls and the surrounding skin once the structures beneath are addressed.

Reversing the order tends to treat the wrong structure. Resurfacing remodels skin in whatever position it finds it, so lasering a tethered scar leaves the tether pulling it down, and filler placed under an intact band tends to spread around it rather than lift the scar. Sequencing also protects the skin: active acne is settled first, each step is allowed to heal before the next, and pigment risk in Fitzpatrick III to V skin is planned for throughout. The plan is reviewed between steps and adjusted to how your skin responds, which is why no fixed course is promised at the start.

Go deeper on Acne Scar Treatment

Common planning mistakes with acne scar treatment

  1. Starting scar work while acne is still active. New lesions keep forming new scars and inflamed skin heals poorly, so active acne is brought under control first and scar revision is sequenced after it.
  2. Resurfacing a tethered scar again and again. A rolling scar is held down by a fibrous band that laser cannot cut; release by subcision comes before resurfacing, otherwise the tether keeps pulling the surface down.
  3. Asking for one laser to treat every scar. Ice-pick, boxcar and rolling scars respond to different tools, and most faces carry a mix, so each scar is mapped in stretched skin and matched to its own method.
  4. Treating flat brown or red marks as scars. Post-inflammatory marks are pigment or dilated vessels, not lost tissue, and resurfacing them can darken them; assessment separates marks from true atrophic scars before any plan.

Not sure acne scars is the right concern to treat? See which treatment fits which cause, a one-page guide to ten common concerns.

Frequently Asked Questions — Acne Scar Treatment

What is the approach for deep or stubborn acne scars?+

Deep and stubborn scars are anchored in the deeper dermal layers, which more superficial treatments may not fully reach. Dr Sin Yong combines subcision with S3 laser resurfacing — a concentrated laser powered by DEKA technology that works at deeper dermal levels — and his 4D Scar Reconstruction approach, matching the method to each scar type, including ice pick, boxcar and rolling scars, and scars that have not fully responded to previous CO2 laser or RF microneedling.

Can keloid or raised acne scars be treated?+

Raised keloid and hypertrophic scars differ from the pitted scars most people mean by 'acne scars' — they sit above the skin and are managed differently, often with intralesional injections and energy-based devices rather than resurfacing. At consultation Dr Sin Yong distinguishes raised scars from pitted ones and plans accordingly, since treating them the same way can worsen a raised scar.

Are acne scar treatments safe for darker or Asian skin?+

Asian and darker skin tones carry a higher risk of post-inflammatory pigmentation, so device choice and settings matter. Dr Sin Yong holds an MSc in Practical Dermatology (Cardiff) and calibrates conservatively for pigment-prone skin, often favouring subcision and radiofrequency microneedling, which treat the scar with lower surface risk. Sun protection between sessions is part of the plan.

Is acne scar treatment suitable for teenagers?+

Acne scar treatment can be suitable for teenagers, but timing matters. Active acne is usually brought under control first, and younger skin is assessed individually. Dr Sin Yong reviews each case at consultation and, for younger patients, discusses the plan with a parent or guardian present.

How do I keep results after acne scar treatment?+

Scar change is structural, but skin quality benefits from ongoing care — sun protection, a suitable routine, and keeping any active acne controlled so new scarring is less likely. Dr Sin Yong advises on maintenance at review.

Which doctor should I see for acne scars in Singapore?+

Acne scar correction depends on accurate diagnosis of the scar type — boxcar, rolling, ice-pick or a mix — because each responds to different techniques. Dr Sin Yong is an aesthetic physician who holds an MSc in Practical Dermatology (University of Cardiff) and combines subcision, fractional laser and radiofrequency microneedling, matching the method to each scar type rather than applying a single treatment. Scars are assessed individually at consultation on Orchard Road, Singapore.

Are stretch marks a type of scar you treat?+

Yes. Stretch marks are a form of dermal scarring — the deeper skin tears as it stretches during pregnancy, growth or weight change and heals as fine streaks. They respond to the same collagen-remodelling lasers, subcision and microneedling used for acne scars, refining their texture over a course of sessions. Newer marks tend to improve more readily than older, silvery ones.

Can you treat surgical or injury scars, not only acne scars?+

Yes. Surgical scars, injury scars and post-inflammatory marks can be improved using the same resurfacing, subcision and collagen-stimulation principles, matched to the scar’s depth and texture. Cellulite, a related textural concern rather than a scar, can also be discussed at the same consultation. Dr Sin Yong will assess which approach suits each mark.

Which acne scar treatment is right for you in Singapore?+

There is no single right treatment — the right choice depends on your scar type. Ice-pick scars, boxcar scars, rolling scars and pigmented marks each respond to different methods. Dr Sin Yong assesses your scar pattern first, then matches and combines treatments accordingly.

Can acne scars be completely removed?+

Most acne scars can be improved rather than erased entirely. Realistic goals are smoother texture and a more even surface. Dr Sin Yong discusses expected improvement honestly, since results depend on scar depth, type and skin response.

How many sessions of acne scar treatment will I need?+

Scar treatment is usually a series rather than a single visit, because collagen remodelling happens gradually. The number depends on scar severity and the methods used, and is set out in a personalised plan after assessment.

Is there downtime with acne scar treatment?+

Downtime after acne scar treatment varies by method. Resurfacing lasers and some microneedling involve a short recovery with redness, while subcision and injectable treatments involve less surface disruption. Dr Sin Yong explains what to expect for your specific plan.

Do I need to wait until my acne is under control first?+

Generally yes. Active, inflamed acne is usually settled before scar treatment begins, so that new scarring does not form. Dr Sin Yong will advise on timing at consultation.

Can different acne scar treatments be combined?+

Yes — mixed scarring is often addressed by combining methods, for example subcision to release rolling scars alongside resurfacing for texture. This is planned around your individual scar pattern.

How much does acne scar treatment cost in Singapore?+

The cost of acne scar treatment and removal depends on your scar types, how severe they are, and how many sessions and methods are needed. Because plans are personalised to your scar pattern rather than sold as a fixed package, Dr Sin Yong gives a clear quote after assessing your skin at consultation.

What is the right treatment for pitted acne scars?+

There is no single right treatment for pitted or depressed acne scars — it depends whether they are ice-pick, boxcar or rolling scars. Deep ice-pick scars often need TCA CROSS, boxcar scars respond to resurfacing and RF microneedling, and rolling scars usually need subcision. Most people benefit from a combination.

Does RF microneedling or fractional CO2 laser work better for acne scars?+

Each has a role, for different scars. RF microneedling remodels scar tissue at depth with minimal surface disruption, while fractional CO2 laser resurfaces and refines the surface. Dr Sin Yong may use either or both depending on your scar type and skin, rather than relying on one device for everything.

Can pigmented acne marks be treated too?+

Yes. Flat brown or red marks left after acne are pigmentation rather than true scars, and they are addressed with pigment-focused and toning lasers rather than resurfacing. These are often treated alongside a scar plan so the overall result looks clearer and more even.

Do acne scars become more noticeable with age?+

They can. Atrophic acne scars sit in skin that gradually loses collagen, fat and elasticity, so a scar that looked shallow in your twenties may cast a deeper shadow later as the support around it thins. This is one reason a scar plan sometimes includes collagen stimulation or volume support alongside release and resurfacing. Dr Sin Yong assesses both the scars and the surrounding skin quality at consultation.

Is TCA CROSS suitable for darker skin?+

It can be used in Fitzpatrick III to V skin, but the main risk is post-inflammatory pigmentation around each treated scar, so acid strength, technique and sun protection are planned with that in mind. Because only the scar itself is treated, the skin between scars is left alone. Whether TCA CROSS suits your scars and skin type is decided at assessment.

What should I do before acne scar treatment?+

Bring a list of earlier scar treatments, your current skincare and medicines, including any isotretinoin, and mention a history of cold sores or keloid scarring. Avoid a fresh tan in the weeks beforehand, because tanned skin is more prone to pigment change after resurfacing. Retinoids and exfoliating acids are usually paused before resurfacing, and active acne should be under control. Specific instructions follow the method chosen at assessment.

Is acne scar treatment painful?+

Most methods are carried out under local or topical anaesthetic. Subcision is usually described as pressure and movement rather than pain, resurfacing as heat during the laser, and TCA CROSS as a brief sting on each scar. Tenderness, bruising or a warm, tight feeling afterwards depends on the method and settles as the skin heals. Comfort measures are discussed before treatment, since tolerance varies.

How long after isotretinoin can I have acne scar treatment?+

There is no single interval that applies to everyone. Older advice was to wait several months after stopping isotretinoin before resurfacing or subcision; more recent reviews suggest some procedures may be reasonable sooner, but the evidence is limited. Timing is weighed case by case, taking into account the method, the depth of treatment, your skin and whether the acne is controlled, and is agreed at assessment.

Can acne scars come back after treatment?+

Treated scars do not usually return, because the change in the dermis is structural. Two things can make scarring look worse later: new acne forming new scars, which is why acne control continues, and ageing, as the collagen and fat around a scar thin and its shadow deepens. Sun protection and a maintenance routine help preserve the surface, and a later review can address either.

Can Sculptra or Ellansé be used as filler for acne scars?+

Sculptra, which is poly-L-lactic acid, and Ellansé, which is polycaprolactone, are collagen biostimulators like Radiesse, but they work through different materials on different timelines. Radiesse is the biostimulator placed into the released space in Dr Sin Yong's 4D Scar Reconstruction sequence; whether another material suits a particular scar is decided at assessment. None of them can be dissolved with hyaluronidase, and none raises a narrow ice-pick scar or changes scar edges.

Is acne scar treatment worth it?+

It is worth considering for depressed scars that bother you, once acne is controlled and expectations are realistic: many scars can be made shallower and smoother, though not all disappear. It is a poorer fit for flat brown or red marks, which need pigment-focused care, or for anyone expecting every scar to vanish.

How long does acne scar treatment last?+

No duration can be promised. Collagen change is gradual, and longevity depends on scar type and depth, skin ageing, sun exposure, new breakouts and how the skin heals. Scars rebuilt from within tend to be more stable than those only smoothed at the surface. Review timing and any maintenance are set at consultation.

What are the disadvantages of acne scar treatment?+

Treatment usually needs a planned course, not one visit. Resurfacing involves scabbing and redness while the skin heals, subcision can bruise, and injectables can cause lumps. Some scars improve less than others, particularly deep or tethered ones, and darker skin needs extra care to avoid pigmentation. Active acne must be controlled first.

Question not answered here? Ask on WhatsApp, use the enquiry form, or browse 100 questions patients ask.

Watch

In his words

“If someone offers you one treatment for your acne scars, they haven't looked closely enough.”Dr Sin Yong

Why One Machine Can't Fix All Your Acne Scars

The 30-Second Home Test For Your Acne Scars

Medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last updated 7 October 2026 · Editorial policy

Patient guide (PDF): Acne scar types and options — a printable summary of this page, medically reviewed by Dr Sin Yong. General information, not a substitute for assessment.

Related reading
Where Dr Sin Yong consults: Wheelock Place, 501 Orchard Road, Singapore 238880 (unit on booking) · Orchard MRT · Mon–Fri 10am–8pm, Sat 11am–3pm · WhatsApp +65 8023 7170 · Getting here · How fees are quoted

Smoother Skin Starts With the Right Diagnosis

Book an acne scar assessment with Dr Sin Yong at his aesthetic practice on Orchard Road, within reach of Somerset, City Hall and the Central town area.

  1. 1WhatsApp a short note on your concern
  2. 2Consultation and assessment with Dr Sin Yong
  3. 3Options explained, including no treatment

Replies within clinic hours: Mon–Fri 10am–8pm, Sat 11am–3pm · How consultations work · Prefer not to use WhatsApp? · Treatment finder

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Explore Further
S3 Resurfacing

Multi-depth laser resurfacing for ice pick, boxcar and rolling scars.

FSX Laser

For superficial scars, post-acne redness, pigmentation and pores.

Treatment Glossary

Subcision, RF microneedling and scar types explained.

DEKA Centre of Excellence

The July 2026 clinical exchange and the platforms behind these protocols.

4D Scar Reconstruction

Layered scar work combining resurfacing with structural release.

International KOL

Invited to share clinical expertise across six manufacturers.

References

  1. Comparative Efficacy and Safety of Fractional CO2 Laser and Microneedling Radiofrequency for Atrophic Acne Scars: A Systematic Review — PMC.
  2. 1064-nm Picosecond Laser vs 1927-nm Fractional Thulium Laser for Atrophic Acne Scars in Asian Patients: A Randomized Split-Face Study — PMC.
  3. Acne scarring — DermNet, 2023.
  4. Subcision — DermNet, 2023.
  5. TCA CROSS — DermNet, 2023.
  6. Acne scars: Overview — American Academy of Dermatology, n.d..
  7. Goodman GJ, Baron JA. Postacne scarring: a qualitative global scarring grading system. Dermatol Surg — Dermatologic Surgery (DOI landing page), 2006.
  8. Fabbrocini G, Annunziata MC, D'Arco V, et al. Acne scars: pathogenesis, classification and treatment. Dermatol Res Pract — Dermatology Research and Practice / PubMed Central, 2010.
  9. Acne — NHS, 2026.
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