Post-Inflammatory Hyperpigmentation

Post-inflammatory hyperpigmentation is a darkening of the skin caused by inflammation from glycolic acid use, especially common in individuals with darker skin tones. It can be temporary or persistent due to overproduction of melanin.

Post-inflammatory hyperpigmentation (PIH) is a skin condition that occurs as a result of inflammation or injury to the skin. In the context of glycolic acid use, it manifests as a darkening of the skin in areas where the product has been applied. This darkening is due to an overproduction of melanin, the pigment responsible for skin color, in response to the inflammation caused by glycolic acid. Individuals with darker skin tones are generally more susceptible to PIH because they naturally produce more melanin. While often temporary, PIH can persist for weeks, months, or even longer in some cases. The severity and duration depend on factors such as the concentration of glycolic acid used, the frequency of application, individual skin sensitivity, and sun exposure.