Acne Scar Types Explained: Why One Treatment Doesn't Fix All of Them
By Dr. Sania Khan · Skin Bliss Aesthetic Clinic
One of the most common frustrations we hear from patients is trying a treatment that worked great for a friend's acne scars, only to see minimal improvement on their own skin. The explanation is usually simple: not all acne scars are the same, and different scar types genuinely require different treatment approaches. Understanding which type (or types — most patients have a combination) you're dealing with is the first real step toward effective treatment.
Why Acne Scars Form Differently in the First Place
When acne causes inflammation deep in the skin, the body's healing response can either produce too little collagen (creating an indented, depressed scar) or too much collagen (creating a raised, hypertrophic scar). The specific pattern of tissue damage from the original breakout — how deep it went, how much surrounding tissue was affected — determines which scar type results.
Ice Pick Scars
What they look like: Narrow, deep, and sharply defined, resembling a small puncture mark — as if the skin was pierced with a sharp, narrow object. They're typically the most difficult scar type to treat because of their depth and narrow channel shape.
Why they're hard to treat: Because ice pick scars extend deep into the dermis in a narrow column, treatments that work on the surface (like chemical peels) often can't reach deep enough to make a meaningful difference.
What actually helps: TCA CROSS technique (a specialized, targeted application of strong TCA directly into the scar), punch excision (a minor surgical technique removing the scar and closing the resulting tiny wound), and CO2 laser resurfacing for the surrounding texture. RF microneedling can provide some improvement but is generally less effective for ice pick scars specifically compared to boxcar or rolling scars.
Boxcar Scars
What they look like: Broader than ice pick scars, with sharply defined, box-like edges and a flat or slightly indented base — similar to chickenpox scarring in appearance.
What actually helps: Boxcar scars generally respond well to a combination of RF microneedling and CO2 laser resurfacing, which work to soften the sharp edges and stimulate collagen to fill the depressed area. For more superficial boxcar scars, this combination often achieves substantial improvement; deeper boxcar scars may need dermal filler to physically lift the depressed area, alongside resurfacing treatments.
Rolling Scars
What they look like: Broad, shallow depressions with sloping, rather than sharply defined, edges — creating a wave-like, undulating texture across the skin rather than a sharply outlined scar.
Why they form this way: Rolling scars are caused by fibrous bands of tissue beneath the skin that tether the skin surface to deeper structures, creating the characteristic rolling, uneven texture.
What actually helps: RF microneedling is particularly well-suited to rolling scars, since the deeper energy delivery can help address some of the fibrous tethering alongside stimulating collagen. Subcision (a technique where a needle is used to manually break up the fibrous bands beneath the scar) combined with RF microneedling or filler often produces the most significant improvement for established rolling scars.
Hypertrophic and Keloid Scars
What they look like: Raised, firm scars — the opposite of the depressed scar types above. Hypertrophic scars remain within the boundary of the original injury, while keloid scars extend beyond it, sometimes growing significantly larger than the original acne lesion.
What actually helps: This scar type requires an entirely different approach from the depressed scars above. Treatment often includes corticosteroid injections to flatten and soften the raised tissue, sometimes combined with laser treatment to address residual redness or texture. Patients with a personal or family history of keloid scarring should discuss this specifically before any aggressive acne scar treatment, since the same trauma that triggers normal healing in most people can trigger excessive, keloid-type healing in predisposed individuals.
Post-Inflammatory Hyperpigmentation (Not Technically a "Scar," But Often Confused With One)
It's worth mentioning here because patients frequently describe this as "scarring" when it's actually a separate, generally more treatable concern. PIH refers to flat, discolored marks (dark or sometimes red/pink) left after acne heals — without any actual textural change to the skin. Unlike true scarring, PIH typically fades on its own over time and responds well to topical brightening treatments, chemical peels, and laser treatments targeting pigment specifically, without needing the more involved scar-resurfacing treatments discussed above.
Why Most Patients Have a Combination of Scar Types
It's genuinely uncommon to have only one scar type — most patients with established acne scarring have a mix, perhaps some boxcar scars alongside rolling scars and some residual PIH. This is precisely why a proper in-person assessment matters so much: an effective treatment plan often combines multiple approaches (RF microneedling for rolling and boxcar scars, TCA CROSS for any ice pick scars, brightening treatment for PIH) rather than relying on a single treatment to address everyone's scarring uniformly.
Building a Realistic Treatment Plan
A typical comprehensive acne scar treatment plan at Skin Bliss might include:
- Initial assessment identifying your specific combination of scar types
- A base series of RF microneedling sessions (typically 3-6, spaced 4-6 weeks apart) addressing rolling and boxcar scars broadly
- Targeted TCA CROSS treatment for any ice pick scars specifically, since these need a different, more focused approach
- PRP combined with the above, to enhance overall healing and collagen response
- Maintenance chemical peels for ongoing texture refinement and any residual pigmentation
How Long Does Full Acne Scar Treatment Take?
This is genuinely a longer-term process — most patients see meaningful improvement over 4-6 months of consistent treatment, with continued subtle improvement for up to a year as collagen remodeling continues. This isn't a quick-fix concern, and clinics promising dramatic results from a single session for established scarring aren't being fully honest about realistic timelines.
FAQs
Acne Scar Types — Your Questions
Complete removal isn't typically realistic for established, deeper scarring — but significant, often dramatic improvement is achievable with the right combination of treatments, even if some very subtle texture remains.
Yes, generally — treating active breakouts first prevents new scarring from forming while you're investing time and money into treating existing scars, and most scar treatments are more effective and safer when performed on skin that isn't actively inflamed.
RF microneedling alone provides meaningful improvement for boxcar and rolling scars, but ice pick scars and hypertrophic/keloid scars typically need additional, more targeted treatments alongside it for optimal results.
There's no strict age requirement, but many practitioners prefer waiting until active acne has substantially settled (often late teens to early twenties) before pursuing scar-specific treatment, to avoid treating scarring while new scars may still be forming.
Ready to Book?
Not sure which scar types you're dealing with, or which treatment combination makes sense for your skin? Book a free consultation at Skin Bliss — we'll assess your specific scarring pattern and build a realistic, combination treatment plan.