Chemical peeling--evaluation of glycolic acid in varying concentrations and time intervals.

Thirty-one patients with melasma, 4 with superficial post acne scarring and one each with xeroderma pigmentosum and epidermal naevus were studied to know the efficacy of glycolic acid for chemical peeling in varying concentrations and time intervals such as 35% (4 minutes), 52.5% (3 minutes), 70% (2 minutes) at varying intervals upto 6 months. These patients were in the age group of 17-44 years. These patients were followed up regularly. Results showed significant improvement when peeling was done with 52.5% glycolic acid for 3 minutes in melasma, 70% glycolic acid for 2 minutes in superficial post acne scarring.