Subcision for Rolling Acne Scars: How It Works and Recovery

Subcision is a minor procedure that treats rolling acne scars by releasing the fibrous bands that pull the skin downward. A doctor inserts a fine needle or blunt cannula under the scar and moves it gently to cut or loosen these bands, allowing the skin to rise and new collagen to fill the space. Recovery usually involves several days of swelling and a week or two of bruising, and most people need one to three sessions, often combined with other scar treatments for the best result.

Rolling scars are among the most common acne scars and can be frustrating because surface treatments alone often make little difference. This article explains why subcision works, what to expect during and after the procedure, and how it fits into a wider scar plan.

Why Rolling Scars Need a Different Approach

Rolling scars appear as broad, shallow depressions that give the skin a wavy or uneven look, especially in side lighting. Unlike ice pick or boxcar scars, the problem is not mainly at the surface. Beneath each rolling scar, bands of fibrous tissue anchor the skin to deeper layers, tethering it down.

Lasers and microneedling can improve skin quality, but if the tethering remains, the depression often persists. Subcision targets the root cause by physically releasing those bands.

How Subcision Works

Subcision has two main effects:

1. Mechanical release: cutting or loosening the fibrous strands allows the depressed skin to lift toward the surface.
2. Controlled wound healing: the procedure causes a small amount of bleeding under the skin. As this heals, new connective tissue and collagen form, which helps support the lifted area.

There are two common instruments:

• Sharp needles: traditional and precise, but may cause more bruising.
• Blunt cannulas: often considered gentler on blood vessels, potentially with less bruising, and useful for broader areas.

Some practitioners combine subcision with dermal fillers or biostimulatory products injected into the released space. These can help maintain lift and reduce the chance of the bands reattaching.

What Happens During the Procedure

1. Assessment and marking: scars are identified under good lighting and marked on the skin.
2. Cleansing and anaesthesia: the area is disinfected and numbed, usually with local anaesthetic injections, sometimes after numbing cream.
3. Release: the needle or cannula is inserted through a tiny entry point and moved in a fan-like motion beneath each scar. You may feel pressure or hear a faint snipping sound as bands release.
4. Compression: firm pressure or ice is applied to reduce bleeding and swelling.

The procedure typically takes from 20 minutes to around an hour depending on how many scars are treated.

Recovery: What to Expect

Recovery from subcision is more noticeable than from many surface treatments, so plan accordingly.

• Days 1 to 3: swelling and tenderness are common. Some lumps may be felt under the skin.
• Days 3 to 10: bruising is often most visible during this period, ranging from mild to quite noticeable, and may turn yellow or green as it fades.
• Weeks 2 to 4: bruising usually clears. Small firm areas may remain as the tissue heals.
• Months 1 to 3: new collagen continues to form, and the improvement in scar depth becomes more evident.

Some people see an immediate lift, partly due to swelling, which then settles before the longer-term collagen response develops.

Aftercare Tips

• Apply cold compresses during the first day or two, as advised.
• Keep entry points clean and avoid touching them with dirty hands.
• Avoid strenuous exercise, saunas and alcohol for a few days to limit swelling and bruising.
• Gentle massage may be recommended by some practitioners to help prevent bands reforming; only do this if instructed.
• Use sunscreen to protect healing skin.
• Tell your doctor in advance about any blood-thinning medicines or supplements; do not stop prescribed medication without medical advice.

Combining Subcision With Other Treatments

Subcision is rarely the only treatment for acne scarring. A typical plan might include:

• RF microneedling or fractional laser sessions to improve surface texture.
• TCA CROSS for deep, narrow ice pick scars.
• Fillers or biostimulators to restore lost volume in depressed areas.

The order and timing of treatments depend on your scars and your doctor's approach. Some clinics in Korea perform subcision in the same session as RF microneedling, while others separate them.

Risks and Limitations

Subcision is generally well tolerated, but possible risks include prolonged bruising, temporary lumps, infection, pigmentation changes and, uncommonly, overcorrection or new irregularities. Bands may partly reattach, which is why multiple sessions are sometimes needed. It is less effective for ice pick and sharp-edged boxcar scars.

Frequently asked questions

How many subcision sessions are typical?

Many people need one to three sessions, spaced several weeks apart, depending on severity and response.

Is subcision painful?

Local anaesthetic makes the procedure itself tolerable. Tenderness afterward is usually mild to moderate and settles within days.

Can I travel soon after subcision?

Yes, but bruising may be visible for up to two weeks. If you are visiting Korea, allow time for swelling to settle before photos or events.

Are the results permanent?

Released bands and new collagen can provide lasting improvement, although some reattachment is possible and touch-ups may be needed.

Speak With a Specialist

Subcision can make a real difference to rolling scars, but technique, scar selection and combination planning matter a great deal. A qualified dermatologist can confirm whether your scars are tethered, explain the expected recovery and design a treatment plan that suits your skin and schedule.