Acne scars are classified into two main types: atrophic and hypertrophic. Atrophic scars cause depressions or pits in the skin due to insufficient collagen production during healing, and they include subtypes such as ice pick, boxcar, and rolling scars. Hypertrophic scars, on the other hand, appear as firm, raised areas where excess collagen forms above the skin’s surface.
To achieve noticeable results, scar revision often combines multiple modalities—such as microneedling, laser therapy, fillers, and chemical peels—tailored to the specific type and severity of acne scarring. Gradual improvement occurs over a series of treatment sessions, as the skin responds and regenerates with each intervention. Early intervention yields the best possible outcome, making it essential to consult with a qualified dermatologist soon after scarring begins for a personalized treatment plan.
Acne scars are classified into four main types, each with distinct characteristics. Ice-pick scars are deep and narrow, resembling small, sharp punctures in the skin. Rolling scars are shallow and broad, creating a wavy or undulating appearance on the skin’s surface due to underlying fibrous bands. Boxcar scars are punched-out depressions with sharply defined edges and can be either shallow or deep, often wider than ice-pick scars. Hypertrophic and keloidal scars, on the other hand, are raised above the skin due to excessive collagen production during healing.
A wide range of advanced treatment options exist for acne scar revision, allowing dermatologists to address diverse scar types with tailored therapies. Laser treatments—such as fractional CO₂ and Er:YAG lasers—can precisely resurface skin and stimulate collagen remodeling, delivering marked improvement for atrophic scars. Injectable fillers help restore lost volume and smooth out depressions, especially in rolling and boxcar scar types. Chemical peels exfoliate damaged skin, promoting regeneration and improved texture. Microneedling enhances natural collagen production, while subcision releases fibrous bands that cause tethering in deeper scars. In some cases, direct scar excision may be necessary for isolated, stubborn lesions, resulting in more even skin. Combination therapy often provides the most significant and lasting results for scar reduction.
