along with other measures. Bleaching agents and chemical peels are the most frequently used methods in the treatment of melisma. In this study, we have seen the effect of 82% lactic acid in patients of melasma which showed reduction in posttreatment MASI score when compared with baseline. The decrease in MASI score was statistically significant (p< 0.05) at 12 weeks and all follow-ups. There was 35.7% of total improvement at final visit (24 weeks) Mean MASI score at baseline was 2.885 which decreased to 1.865 at 12 weeks, 1.86 at 16 weeks, and finally to 1.855 at follow-up of 20 and 24 weeks while study done by Sharquie et al. with 92% LA demonstrated a mean decrease of 7.76 in MASI representing 79.34% improvement [13] Another study done by the same author again demonstrated a mean decrease of 7.97 in MASI representing 56.72% improvement [31]. The difference in results may be because of the profound difference in skin types as in our study all patients were of darker skin types belonging mostly to Fitzpatrick skin type V while in the previous studies patients belong to Iraqi population with fairer skin types of IV having epidermal melasma and best therapeutic results are normally achieved in epidermal melasma [32] Similarly past history of melasma was little bit long (4 months to 12 years) in our study as compared to above mention study (2 to 10