Most people who come to us for acne scars have already tried the usual lineup — vitamin C serums, chemical peels, maybe a round of microneedling somewhere. And for surface-level discoloration, those often help. But for the deep, pitted, “rolling” scars that seem to sit anchored under the skin no matter what you apply on top, topical treatments were never going to be enough. That’s a structural problem, not a surface one, and it needs a structural fix. That’s where subcision comes in.

Why Some Acne Scars Don’t Respond to Creams

Rolling and tethered acne scars form because fibrous bands develop under the skin during healing, pulling the surface downward and creating that dimpled, shadowed look. No cream, peel, or laser reaches under the skin to release that tension. Subcision does exactly that, and it’s why dermatologists reach for it specifically when a scar looks “anchored” rather than just discolored or shallow.

What Subcision Actually Is

Subcision — short for subcutaneous incisionless surgery — is a minor in-clinic procedure where a fine needle or cannula is inserted beneath the scar to physically break up those fibrous tethering bands. Once released, the skin can lift back toward its natural position, and the controlled bleeding underneath actually helps stimulate fresh collagen production as it heals. It’s one of the few acne scar treatments that works on the actual mechanism causing the scar, rather than resurfacing the skin above it.

It’s best suited to rolling and tethered atrophic scars specifically. Ice-pick scars (narrow, deep punctures) and boxcar scars (sharp-edged depressions) usually need different or combined approaches, which is exactly why an in-person assessment matters before anyone commits to a treatment plan.

Before Your Procedure

Preparation is simple but genuinely matters for how smoothly the procedure and recovery go.

• Stop blood thinners in advance. Aspirin, vitamin E supplements, and similar blood-thinning agents should be paused roughly a week to ten days before your session, only after checking with your doctor if you’re on them for a medical reason. This single step makes the biggest difference in how much bruising you’ll see afterward.
• Come with a clean face. No makeup, sunscreen, or heavy skincare products on the day of your appointment.
• Flag any medications or conditions. Isotretinoin use, bleeding disorders, or a history of keloid scarring all change how we plan the session, so mention these upfront rather than after the fact.
• Set expectations correctly. Subcision reduces the visibility and depth of scars — it doesn’t erase them completely in a single sitting. Most patients need multiple sessions, spaced about four weeks apart, before they see the full result they’re aiming for.

During the Procedure

A typical subcision session takes 30 to 60 minutes, depending on how many scars are being treated and how large the area is. Here’s what actually happens on the table:

The treatment area is cleaned and numbed with a local anesthetic — this is the only part with any real discomfort, a quick pinch, and after that most patients feel pressure or a faint tugging sensation rather than pain. Once numb, a fine needle or blunt cannula is inserted just beneath each scar and moved in a controlled, fanning motion to sever the fibrous bands holding the skin down. You’ll sometimes notice a mild, immediate lift in the treated scars right on the table, purely from the release of tension — though the fuller result builds over the following weeks as collagen fills in underneath.

After the Procedure: Recovery, Day by Day

This is the part patients ask about most, so let’s be specific rather than vague.

Days 1–2: Expect swelling and the start of bruising at the treated sites, along with some tenderness. This isn’t a complication — it’s actually part of how the treatment works, since that controlled bruising helps trigger the collagen remodeling that smooths the scar over time.

Days 3–7: Bruising and swelling typically peak early and then start fading through this window. Small firm areas or lumps under the skin are common and expected; they settle as healing progresses. Most patients feel comfortable resuming normal routines by day 5 to 7, sunscreen included.

Weeks 2–6: Visible bruising is usually gone, but “micro-swelling” — a subtle, mostly invisible residual swelling — can continue settling for weeks as collagen remodeling finishes its work underneath the surface.

What’s normal vs what’s not: Bruising, swelling, tenderness, and small temporary lumps are all expected. Spreading redness or warmth that worsens rather than improves, increasing pain instead of steady relief, or any sign of pus or discharge are not routine and warrant a quick call to your clinic.

How Many Sessions Will You Need?

Most patients need 3 to 6 sessions, spaced roughly a month apart, particularly for scars that have been established for years. This staged approach isn’t a sign the first session underperformed — it’s how the treatment is designed to work, letting each round remodel before the next one builds on it. We often combine subcision with microneedling or dermal fillers across a treatment plan, since layering these addresses both the structural tethering and the surface texture together.

Setting Realistic Expectations

Subcision is genuinely one of the more effective options for rolling and tethered scars, but “effective” here means meaningfully smoother, more even-looking skin — not a return to scar-free skin from before acne ever happened. Results build gradually. Some improvement is visible within a few weeks; the fuller effect, as new collagen matures, often continues developing over several months.

Who Should Think Twice

If you’re currently on isotretinoin, have an active skin infection in the treatment area, or have a history of forming keloids, subcision needs a more careful conversation with your dermatologist before proceeding — it might still be an option, but the plan and precautions will look different.

Ready to Talk About Your Scars?

Every acne scar pattern is different, and the right combination of subcision, microneedling, or fillers depends entirely on what’s actually happening under your skin — not a one-size template. Book a consultation, and we’ll assess your scar types individually and map out a realistic, staged plan built around your skin, not a generic protocol..