Chemical Peels for Acne Scars

Not all acne scars respond to the same treatment. Knowing the difference saves time.

Acne scars fall into two broad categories: atrophic scarring, which includes textural depressions like ice pick, rolling, and boxcar scars, and post-inflammatory hyperpigmentation, which is flat discoloration rather than structural damage. Chemical peels address both, but the peel type and depth are matched to what's actually present.

Post-inflammatory hyperpigmentation responds well to superficial peels. Exfoliating the stratum corneum accelerates melanin turnover, reducing the appearance of dark marks over a treatment series. Deeper atrophic scarring requires more targeted resurfacing. The goal shifts to triggering collagen remodeling in the dermis, which requires a different peel selection and a longer healing window.

Peel selection matters as much as the application itself. Salicylic acid peels are well-suited for active acne alongside hyperpigmentation because salicylic is lipid-soluble and penetrates the follicle. Enzyme peels sit at the most superficial end, and are appropriate for sensitized skin that needs exfoliation without the chemical load. The starting point of any peel protocol is knowing which scar type you're treating.