Post-Acne Marks vs True Scarring: Two Different Problems
"Acne scars" is a catch-all phrase. It actually covers two very different situations. Figuring out which one you have determines whether an at-home routine will help, or whether you need a professional. The first, and far more common, is a post-acne mark. That's flat discoloration left where a pimple used to be. The second is true scarring, where the skin's structure itself has changed. A fresh mark can look darker or more inflamed than it will a few weeks later. That makes the two easy to confuse early on.
Post-Acne Marks: Hyperpigmentation & Post-Inflammatory Erythema Without Texture
Post-acne marks are flat. Run a finger over one with your eyes closed and you won't feel a dip, ridge, or bump — just smooth skin in a different color. There are two common types. Post-inflammatory hyperpigmentation (PIH) is brown, tan, or dark spots caused by excess melanin. It's more common, and often more stubborn, in medium-to-deep skin tones. Post-inflammatory erythema (PIE) is pink or red, caused by damaged, visible capillaries near the surface. It's more noticeable in lighter skin tones. It also tends to fade faster than PIH. Both are temporary. Left alone, they typically fade over months to about a year. Brightening ingredients help speed that up — azelaic acid like The Ordinary's Suspension, or a gentler CeraVe vitamin C serum. Daily sunscreen from a brand like EltaMD matters just as much.
True Scarring: A Structural Change in Collagen & Pigment
True acne scarring happens when a breakout damages the deeper collagen structure of skin during healing. It either destroys tissue, leaving an indentation, or overproduces it, leaving a raised bump. Texture is the giveaway — you can feel it with your eyes closed, unlike a mark. Dermatologists group textural scars into a few patterns, covered below. None of them fade the way a pigment mark does. The change is structural, not just color sitting in the skin. No serum rebuilds lost collagen or releases a fibrous band pulling on the surface.
Icepick Scars, Boxcar Scars, Rolling Scars & Hypertrophic Scars
- Icepick scars: narrow, deep, pinpoint indentations, often from severe cystic acne
- Boxcar scars: broader indentations with defined edges, giving skin a pitted look
- Rolling scars: shallow, wave-like depressions caused by bands of scar tissue pulling on skin from underneath
- Hypertrophic scars or keloid scars: raised, sometimes thickened tissue where the body produced too much collagen during healing
Why the Distinction Matters for What You Do Next
Color without texture calls for a consistent at-home routine: brightening ingredients like The Inkey List's niacinamide serum or an OTC retinoid such as Differin, gentle exfoliation, and daily sunscreen. With patience, that's genuinely effective. Any texture change is different. Over-the-counter products may even out tone somewhat. They won't resolve a structural issue on their own.
Dermatologist Options: Microneedling, Laser Resurfacing, Subcision & Dermal Fillers
A dermatologist can evaluate the specific scar pattern and depth. They can discuss options like professional microneedling, laser resurfacing, subcision, or dermal fillers. All of these are performed and monitored by a professional, not attempted at home.
Chemical Peels and When You're Not Sure Which You Have
Chemical peels are another in-office option a dermatologist may recommend. It's common to have both marks and scars at once. Some spots fade on their own, and a few textural scars remain in others, especially after a severe breakout history. If you're uncertain, or marks aren't fading after months of care, that's a good reason to get a dermatologist's opinion. Don't keep guessing or reaching for aggressive products at home. A dermatologist can also spot early signs of a breakout that's likely to scar.
