Treating Acne Scarring with Laser: An Honest Guide

Medically reviewed by Dr. Sangsu Han, Oculoplastic Surgeon, U Eye Laser Cosmetic.

Acne scarring has a way of outlasting the acne itself. Long after the breakouts settle, the marks they leave can stay — and because they sit in the skin’s structure rather than on its surface, they resist the creams and routines that helped clear the acne in the first place. That persistence is what brings people to laser treatment, often after years of trying gentler things. So it is worth being honest from the outset about what laser can do here: it can meaningfully soften and improve the appearance of acne scarring, and for many people that improvement is genuinely life-changing in how they feel about their skin. What it generally cannot do is erase scars completely. Holding both of those truths at once is the foundation of a good result.

Why scar type decides everything

The single most useful thing to understand is that “acne scarring” is not one problem. Different scars form in different ways and respond to treatment very differently, which is why no single approach fits everyone.

• Atrophic scars are depressed — the skin sits below the surrounding surface because collagen was lost during healing. These are the most common, and they include the narrow, deep ice-pick scars, the wider boxcar scars with sharper edges, and the soft, sloping rolling scars. They respond to treatments that rebuild collagen and resurface the skin, but the deepest, narrowest among them are also the hardest to improve.
• Hypertrophic and keloid scars are raised, formed by an excess of collagen rather than a loss. These behave almost oppositely to atrophic scars and call for a different strategy — and a careful one, since aggressive treatment can sometimes worsen a keloid tendency.
• Post-inflammatory pigmentation — the brown or darkened marks left after a blemish — is not strictly a scar at all, but flat discolouration. It often fades over time and frequently responds well to treatment, which is encouraging, because much of what people call “scarring” is actually this.

This matters because a plan built for shallow, pigmented marks looks nothing like a plan for deep atrophic scars, and being clear about which you have is the first step toward a realistic expectation.

How laser helps

Laser resurfacing works on acne scarring through the same mechanism it uses elsewhere: it renews the skin’s surface and, more importantly, heats the deeper dermis to stimulate fresh collagen. For atrophic scars — the depressed kind — that new collagen can gradually fill and soften the depression from beneath, raising the floor of the scar toward the surrounding skin and smoothing the transition at its edges. Over a series of sessions, the cumulative effect can noticeably even out skin texture.

Fractional resurfacing, which treats the skin in a grid of microscopic columns and leaves healthy skin in between to speed healing, is the workhorse here. Lighter, non-ablative settings build improvement gradually with minimal downtime; deeper settings do more in fewer sessions but ask for real recovery. Which is right depends on your scars, your skin type, and how your skin heals.

Laser is also rarely the only tool. Microneedling, which prompts collagen through controlled micro-injury, and certain peels both have a place, and for some scar patterns a combination — or a different treatment entirely — is the better answer. The point of an assessment is to match the method to the scar rather than to apply one favourite technique to everything.

The honest part: partial improvement, not erasure

This deserves to be said plainly, because it is where expectations most often go wrong. Acne scar treatment improves the appearance of scarring; it does not return the skin to a scar-free state. A realistic, good outcome is meaningful softening — scars that are shallower, less sharply defined, and far less noticeable in normal light — across a series of treatments and over months as collagen rebuilds. Deeper scars improve less than shallow ones. Some scars need more than one type of treatment. And results build gradually rather than appearing after a single session.

None of that is a reason to be discouraged. For most people, “much less noticeable” is exactly the outcome that matters — it is the difference between skin they think about constantly and skin they stop thinking about. But it is a different promise from “gone,” and anyone offering the latter is overselling.

Who should wait, and what to settle first

Laser scar treatment works best on settled skin. If acne is still active, it generally makes sense to bring the breakouts under control first — treating scars while new ones are forming is working against the current. Freshly tanned or sunburnt skin should heal before resurfacing, and a recent course of certain acne medications usually calls for a waiting period. A tendency to form keloid or raised scars warrants real caution and a careful discussion before any resurfacing. And richer, more deeply pigmented skin tones — which are absolutely treatable — need settings chosen carefully, because the wrong depth can leave pigment changes that look like new marks. This is exactly why the treatment must be built around your individual skin: the same laser, set wrong for your skin type, can trade one problem for another.

What to expect

A typical course involves a series of sessions rather than a single visit, spaced to let the skin recover and collagen build between them. After each session the skin behaves as though mildly sunburnt — pink and warm, sometimes with a few days of flaking depending on depth — and diligent sun protection throughout is part of the treatment, not an optional extra. The most meaningful improvement arrives slowly, over the two to three months it takes new collagen to mature, and continues to develop across the series.

Because UELC offers a range of skin treatments and sits within a broader aesthetic group, acne scar care is planned as a whole rather than as a single device applied reflexively. Sometimes laser is the centre of the plan; sometimes it is one element alongside others; occasionally a different approach suits your scars better. A good assessment will tell you which, honestly.

If acne scarring is something you would like to improve, the most useful next step is an in-person assessment so your scar type and skin can be evaluated and the right plan matched to them. You can book a consultation with our aesthetic team, or learn more on our skin rejuvenation page.

Frequently asked questions

Can laser completely remove acne scars? Generally no. Laser can meaningfully soften and improve the appearance of acne scarring — shallower, less defined, far less noticeable — but it does not erase scars entirely. Meaningful improvement, not erasure, is the realistic and honest expectation.

Does the type of acne scar matter? It matters a great deal. Depressed (atrophic) scars, raised (hypertrophic or keloid) scars, and flat post-inflammatory pigmentation all behave differently and call for different approaches. Identifying which you have is the first step toward a realistic plan.

How many sessions will I need? Acne scar treatment is almost always a series rather than one visit, with results building gradually over months as new collagen forms. The exact number depends on your scar type, depth, and skin — which is settled at assessment.

Should I treat scars while I still have active acne? Usually it’s best to bring active breakouts under control first. Treating scars while new acne is still forming works against the result. Your provider will advise on timing at consultation.