Most acne scars can be significantly improved, but the right approach depends entirely on what type of scar you’re dealing with. Flat dark or red marks left behind after a breakout aren’t true scars and typically fade on their own within 8 to 12 weeks with the right topical care. Indented or raised scars involve structural changes beneath the skin and need more targeted treatment, sometimes professional procedures, to see real results.
Identify Your Scar Type First
Before spending money on any treatment, figure out what you’re actually treating. Acne leaves behind several distinct types of marks, and each responds to different interventions.
Dark or red flat spots are post-inflammatory hyperpigmentation (PIH) or post-inflammatory erythema. These are discoloration, not scars. The skin surface is smooth when you run your finger over it. They’re the most common marks acne leaves behind and the easiest to treat.
Atrophic scars are shallow, pitted depressions with smooth borders. They form when your skin doesn’t produce enough collagen during healing. Ice pick scars are a more severe version: deep, narrow pits with sharp edges that look like the skin was punctured. Rolling scars create a wave-like unevenness across the skin because fibrous bands pull the surface downward from underneath.
Hypertrophic scars are raised, firm bumps that sit above the skin’s surface. They form when the body overproduces collagen during healing. These are less common with facial acne but more frequent on the chest and back.
Treating Dark Spots and Discoloration
If your “scars” are flat spots of discoloration, you can treat them at home with consistent use of a few key ingredients. Vitamin C serums help break up excess pigment and even out skin tone. Niacinamide works similarly, reducing the transfer of pigment to surrounding skin cells. Both are available over the counter and well tolerated by most skin types.
Sunscreen is non-negotiable during this process. UV exposure darkens hyperpigmentation and can make temporary marks semi-permanent. A broad-spectrum SPF 30 or higher, applied daily, is the single most important step for fading dark spots. Expect a minimum of 8 to 12 weeks of consistent use before you see meaningful improvement, and often longer for deeper pigmentation in darker skin tones.
Topical Retinoids for Mild Scarring
Retinoids (vitamin A derivatives available in both prescription and over-the-counter strengths) are the most studied topical treatment for actual acne scars. They speed up skin cell turnover and, more importantly, stimulate new collagen and elastic tissue production in the deeper layers of skin. This gradual remodeling can soften the edges of shallow atrophic scars over time.
In clinical testing, a prescription-strength retinoid combined with benzoyl peroxide significantly reduced scar counts over 24 weeks compared to an inactive vehicle. That’s six months of daily use for noticeable improvement, so patience matters here. Over-the-counter retinol works on the same principle but at lower potency, meaning results take longer. Start with a low concentration two or three nights per week and increase gradually to minimize irritation.
Professional Treatments for Deeper Scars
When scars are deep enough that you can feel them with your fingertip, topical products alone won’t be enough. Several in-office procedures can produce substantial improvement, though most require multiple sessions and weeks of healing between them.
Laser Resurfacing
Ablative lasers (like CO2 lasers) remove thin layers of skin and trigger an aggressive collagen-rebuilding response. Most people need only one session, with optional touch-ups later. Recovery involves redness, peeling, and sensitivity for one to two weeks. Erbium lasers offer a slightly gentler alternative: one session for strong improvement or two to three sessions at lower intensity for gradual resurfacing with less downtime.
After either type, collagen production continues ramping up for one to three months post-treatment, with improvements building over that entire window. Your skin won’t look its best the day the redness fades. The full result takes time.
Microneedling With Radiofrequency
This treatment uses tiny needles (typically penetrating 1.6 to 2.0 mm into the skin) that deliver radiofrequency energy beneath the surface. The combination of controlled micro-injuries and heat stimulates collagen remodeling at a deeper level than microneedling alone. A standard protocol involves three sessions spaced four weeks apart. It’s effective for moderate atrophic scarring and generally has less downtime than ablative lasers, with redness and mild swelling lasting a few days.
Subcision for Rolling Scars
Rolling scars have a specific structural problem: fibrous bands beneath the skin pull the surface downward, creating that uneven, shadowed appearance. Subcision directly addresses this. A needle is inserted beneath the scar to cut those tethering bands, releasing the skin so it can sit flat again. The wound-healing process that follows also deposits new collagen in the area. Subcision works best when combined with other treatments like microneedling, chemical peels, or laser sessions to refine the surface texture afterward.
TCA CROSS for Ice Pick Scars
Ice pick scars are the hardest to treat because they’re so narrow and deep. The CROSS technique involves applying a high concentration of trichloroacetic acid (TCA) directly into each individual scar using a fine needle or applicator. This causes controlled destruction inside the scar, prompting the body to fill it in with new collagen from the bottom up. In one case series, six sessions using 100% TCA produced significant improvement in ice pick and boxcar scars.
This is a treatment with real risks, though. Studies have documented temporary pigment changes (both lightening and darkening), and one study found that 17% of patients treated with 70% TCA experienced neighboring scars merging into larger depressions. The concentration, application tool, and technique all matter enormously, which is why this should only be done by an experienced dermatologist who can assess your skin type and scar depth.
Raised Scars Need Different Strategies
Hypertrophic and keloid scars involve excess collagen rather than too little, so treatments that stimulate more collagen (like microneedling or lasers) can sometimes make them worse. Silicone gel sheets are commonly recommended for raised scars, though a Cochrane review of 13 studies found only low-confidence evidence that they improve appearance, noting researchers are uncertain whether they work better than no treatment at all. They may slightly reduce pain, which is useful for tender raised scars. Corticosteroid injections, which a dermatologist can administer directly into the scar tissue, are a more reliably effective option for flattening hypertrophic scars.
Preventing New Scars While You Treat Old Ones
No scar treatment works well if new breakouts keep creating fresh damage. Keeping active acne under control is step one. Beyond that, how you handle a breakout while it’s happening directly affects whether it leaves a mark.
Avoid picking, squeezing, or popping pimples. This delays natural healing, introduces bacteria, increases inflammation, and significantly raises the chance of scarring. Hydrocolloid pimple patches serve a dual purpose here: they physically prevent you from touching the spot while creating a moist healing environment. Moist wound healing produces softer, more supple new skin compared to letting a wound dry out and scab over, and it speeds up the overall healing timeline.
If you’re using retinoids for existing scars, they’re simultaneously working to prevent future scarring by keeping pores clear and reducing the severity of new breakouts. This dual benefit makes them a particularly smart long-term investment for skin that’s prone to both acne and scarring.
Realistic Timelines and Expectations
The most common frustration with scar treatment is that nothing works fast. Flat discoloration takes 8 to 12 weeks minimum to fade with topicals. Retinoids need about 24 weeks to show measurable scar reduction. Professional procedures deliver faster visible change, but collagen remodeling continues for months afterward, meaning your three-month result will look better than your three-week result.
Most moderate to severe scarring requires a combination of treatments rather than a single approach. A dermatologist might recommend subcision for tethered rolling scars, followed by laser resurfacing for texture, with retinoids and sunscreen as the daily maintenance backbone. Each scar type responds to its own set of tools, and many people have multiple types on the same face. A customized, multi-step plan almost always outperforms any single treatment used alone.