Post-Inflammatory Hyperpigmentation: Causes, Treatments, and What Works

When your skin heals from a pimple, cut, burn, or rash, it sometimes leaves behind a dark spot—that’s post-inflammatory hyperpigmentation, a common skin condition where excess melanin is produced after inflammation or injury. Also known as PIH, it’s not a scar, but it can feel just as frustrating because it lingers long after the original injury is gone. This isn’t just a cosmetic issue—it affects confidence, especially in people with darker skin tones, where PIH tends to be more visible and longer-lasting.

It’s not caused by sun exposure alone, though UV rays make it worse. The real trigger is inflammation: acne, eczema, ingrown hairs, even aggressive facials or laser treatments can set it off. Melanin, the pigment that gives skin its color goes into overdrive during healing, leaving behind patches that look like stains. You can’t scrub it away with harsh products—that often makes it deeper. And while many think it fades on its own, it can take months or even years without the right approach.

Topical treatments, like hydroquinone, azelaic acid, and retinoids are the first line of defense. They work by slowing down melanin production or speeding up skin turnover. But they need time—weeks, not days. Sunscreen isn’t optional; it’s non-negotiable. Without daily SPF 30+, any progress you make will reverse. Even mild sun exposure can darken those spots again. And if you’re using acne treatments like benzoyl peroxide or salicylic acid, be careful: they help clear breakouts but can also trigger more PIH if your skin gets too irritated.

Some people turn to chemical peels or lasers, but those can backfire if not done right. A dermatologist should guide you, especially if you have medium to dark skin. The wrong laser can cause more pigmentation, not less. There’s no magic cure, but consistent, gentle care works. Think of it like repairing a wall—you don’t rush the plaster. You prep, you layer, you protect.

What you’ll find in the posts below are real, practical guides on what actually helps fade these dark spots. From comparing Aziderm Cream with other acne treatments to understanding how topical ingredients like zinc oxide and benzalkonium chloride support healing, you’ll see which options have science behind them—and which are just hype. You’ll also learn how some medications, like blood thinners or hormonal treatments, can influence skin reactions, and how to avoid making PIH worse while treating other conditions. This isn’t about quick fixes. It’s about smart, sustainable steps to get your skin tone back to even—and keep it that way.