Post inflammatory Hyperpigmentation can occur from the use of active cosmeceuticals if caution is not used. To ensure the pigmentation does not progressively darken it is important to protect the skin with the use of SPF. There are different treatment modalities that can be used to treat post inflammatory hyperpigmentation, it is recommended to consult with a specialist to review appropriate treatment for this concern. Salicylic acid can be used as a peel, cream, lotion or a wash. Unlike glycolic and lactic acid (known as alpha hydroxy acids), salicylic acid does not require neutralization. Salicylic acid is the only member of the BHA or beta hydroxy acid family. Salicylic acid has both lipophilic and anti-inflammatory properties. This means this peel can penetrate into the oil glands and also reduce redness and inflammation secondary to acne, zits, whiteheads and blackheads. The concentration of salicylic acid peels will vary from 10% all the way to 30%. The ideal percentage will depend on the clinical picture, your previous experience, as well as your ethnic skin type. Most patients will benefit from salicylic acid peels every 2-4 weeks. Be guided by your therapist as to the correct type of peels, and the optimal concentration. All the best, Dr Davin S. Lim & the team at Clinic Cutis. Brisbane. Australia.