Subcision for rolling acne scars
subcutaneous incisionless surgery · Nokor needle · cannula subcision · suction-assisted subcision
Subcision has had a second life on social media as the 'one treatment lasers can't replace', usually in videos of a needle fanning under the cheek. The enthusiasm is roughly right; the videos leave out the bruising and the fact that it is one part of a plan.
Search interest: about 100 searches a month in Singapore for “subcision” (Ahrefs, October 2026).
It earns its reputation on rolling scars and nowhere else.
Reviewed against the Aesthetics International standard. Category: Procedures.
Do Subcision for rolling acne scars work?
Established. It earns its reputation on rolling scars and nowhere else. Described in 1995, subcision is supported by comparative trials and reviews showing meaningful improvement in rolling scars, with a 2011 trial finding it superior to TCA for that scar type and a 2024 randomised trial showing added benefit from suction.
- Verdict
- Established Long clinical track record. Results depend on selection and technique more than on the device.
- Evidence base
- 5 PubMed-indexed studies cited below, including randomised trials.
- Suits
- Rolling, tethered acne scars that flatten when the skin is stretched; tethered surgical scars; people who accept bruising and a staged plan combining subcision with resurfacing.
- Not for
- Ice-pick and narrow boxcar scars, active acne, people on blood thinners without medical review, and anyone wanting one session with no visible recovery.
- In Singapore
- Subcision is performed by doctors in Singapore clinics and is a component of combined scar protocols, including the 4D Scar Reconstruction protocol published here.
- Category
- Procedures · about 100 searches a month in Singapore for “subcision”
- Reviewed
- 6 October 2026 by Aesthetics International. Revised as evidence and regulation change.
What it is
Subcision releases the fibrous bands that tether rolling acne scars to the deeper tissue. A needle, blunt cannula or small blade is passed horizontally under the scar and swept to cut the bands; the released skin lifts, and the blood and healing response beneath it lays down new collagen. It is also used for some tethered surgical and traumatic scars.
How it works
Under local anaesthetic the instrument enters through a tiny puncture and is fanned under the scar in several planes. Bleeding into the space is part of the mechanism; some protocols add suction over following days, filler or the patient's own blood products to keep the space open. Bruising lasts one to two weeks. Two or three rounds, often combined with resurfacing or RF microneedling, is a typical course.
What the evidence says
Described in 1995, subcision is supported by comparative trials and reviews showing meaningful improvement in rolling scars, with a 2011 trial finding it superior to TCA for that scar type and a 2024 randomised trial showing added benefit from suction. Reviews consistently place it as the treatment of choice for tethered rolling scars and note that boxcar and ice-pick scars need other methods. Complications are mostly bruising and nodules; rare nerve injury and persistent lumps are documented.
What people are saying
Paraphrased from public discussion on TikTok, Instagram, Reddit and in the press. Not testimonials, and not about any one clinic. Reported in: reddit.com, reddit.com.
What the studies show
- case series
The original description of subcision: releasing fibrous tethers under depressed scars with a hypodermic needle produced lasting elevation of rolling scars and some wrinkles.
Subcutaneous incisionless (subcision) surgery for the correction of depressed scars and wrinkles. — Dermatol Surg, 1995. PMID 7773602.
- comparative trial
In rolling acne scars, subcision produced greater improvement than 100% TCA CROSS, supporting matching the method to the scar type.
Subcision versus 100% trichloroacetic acid in the treatment of rolling acne scars. — Dermatol Surg, 2011. PMID 21457391.
- RCT
Adding post-procedure suction to subcision improved blinded scar scores compared with subcision alone on the contralateral side.
Subcision with and without suction for acne scars: a split-faced, rater-blinded randomized control trial. — Arch Dermatol Res, 2024. PMID 38847979.
- review
Needle, cannula and blade subcision all improve rolling scars; combination with fillers, resurfacing or energy devices yields greater improvement than subcision alone.
Subcision for Atrophic Acne Scarring: A Comprehensive Review of Surgical Instruments and Combinatorial Treatments. — Clin Cosmet Investig Dermatol, 2023. PMID 36698445.
- review
Bruising, swelling and transient nodules are common; persistent nodules, hyperpigmentation and rare nerve or vessel injury are the complications to counsel for.
Complications of Subcision for Acne Scarring: Experience From Clinical Practice and Review of the Literature. — J Cosmet Dermatol, 2025. PMID 39492124.
Studies are selected for relevance and quality, not for agreement with the verdict; PubMed records are linked so the reader can check them.
Who it suits
Suits
Rolling, tethered acne scars that flatten when the skin is stretched; tethered surgical scars; people who accept bruising and a staged plan combining subcision with resurfacing.
Not for
Ice-pick and narrow boxcar scars, active acne, people on blood thinners without medical review, and anyone wanting one session with no visible recovery.
Alternatives
The two reviewed treatments most often weighed against Subcision for rolling acne scars, on the same standard.
| Subcision for rolling acne scars | Chemical peels | TCA CROSS for ice-pick scars | |
|---|---|---|---|
| Verdict | Established | Established | Established |
| What it is | Subcision releases the fibrous bands that tether rolling acne scars to the deeper tissue. | A controlled chemical injury to the skin that removes layers at a chosen depth and triggers regeneration. | CROSS stands for chemical reconstruction of skin scars: a drop of high-strength trichloroacetic acid, 70 to 100 per cent, is placed precisely into the base of an ice-pick or narrow boxcar scar with a fine applicator. |
| Evidence base | 5 PubMed-indexed studies cited below, including randomised trials. | 4 PubMed-indexed studies cited below, including systematic reviews. | 5 PubMed-indexed studies cited below, including systematic reviews, randomised trials. |
| Suits | Rolling, tethered acne scars that flatten when the skin is stretched; tethered surgical scars; people who accept bruising and a staged plan combining subcision with resurfacing. | Acne and post-acne marks, dullness, uneven tone and early photoageing; melasma as an adjunct to topicals; people who want a course of low-downtime treatments. | Ice-pick scars and narrow deep boxcar scars, in any skin type when applied precisely by an experienced operator; people willing to repeat the treatment several times. |
| In one line | It earns its reputation on rolling scars and nowhere else. | The result is written in the depth and the priming, not in the brand on the bottle. | A drop of acid in the right pit does more than a thousand laser shots over it; the same drop in the wrong place makes a bigger pit. |
Risks
Bruising for one to two weeks, swelling, firm nodules that usually settle over weeks, post-inflammatory pigmentation in darker skin, rare persistent lumps, nerve or vessel injury.
In Singapore
Subcision is performed by doctors in Singapore clinics and is a component of combined scar protocols, including the 4D Scar Reconstruction protocol published here. Because most Singapore patients are Fitzpatrick III to V, the sequence and spacing of subcision and energy treatments is planned to limit pigmentation. Fees are quoted at consultation.
“It earns its reputation on rolling scars and nowhere else.”
Vetted protocols on the same problem
Questions
Which scars does subcision treat?
How many subcision sessions are needed?
Does subcision hurt?
Subcision or filler for acne scars?
What are the risks?
Is subcision part of the 4D Scar Reconstruction protocol?
Cite this review
Aesthetics International (2026). Subcision for rolling acne scars: does it work? Evidence, risks and verdict. https://aesthetics-international.org/treatments/subcision/ (reviewed 6 October 2026).
Editorial, unpaid and independent of any manufacturer. Verdict: Established. See what works and what doesn't across all 153 reviews. Spotted an error or a newer study? Suggest a correction — changes are logged on the corrections page. Terms are defined in the glossary.
Where this review is used
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