Randomized study comparing the efficacy and tolerance of a lipohydroxy acid shampoo to a ciclopiroxolamine shampoo in the treatment of scalp seborrheic dermatitis

Background the success of a dandruff treatment depends not only on the ability of a shampoo to control dandruff, but also on patient compliance, which is closely linked to the cosmetic attributes of the product.Aim the aim of this study was to compare efficacy, tolerance, and cosmetic properties of a LHA Shampoo [containing 0.1% lipohydroxy acid (LHA) and 1.3% salicylic acid] to a CPO shampoo [containing 1.5% ciclopiroxolamine (CPO), 3% salicylic acid, and 0.5% menthol] in subjects with seborrheic dermatitis (SD) of the scalp.Methods One hundred subjects with mild to moderate scalp SD were randomized to receive either the LHA shampoo or the CPO shampoo every 2 days for 4 weeks. Efficacy and tolerance were evaluated at days 0, 14, and 28.Results the LHA and the CPO shampoo both decreased symptoms of scale, erythema, itching, cutaneous discomfort, and dryness from baseline to day 28. A higher percentage of patients showed improvement in the group treated with the LHA formulation than in the group treated with the CPO formulation, but the difference did not reach statistical significance. At day 28, the tolerance and the global efficacy of the LHA shampoo were significantly better (P = 0.03 and P = 0.01, respectively) than those of the CPO shampoo. Furthermore, the cosmetic acceptability was better or significantly better for all the endpoints evaluated for the LHA shampoo (P = 0.02 for cleaning, P = 0.04 for lathering).Conclusion in conclusion, these results demonstrated that the lipohydroxy acid shampoo evaluated in this study is a more convenient, efficient, safe, and well-tolerated cosmetic treatment for mild-to-moderate seborrheic dermatitis of the scalp than a ciclopiroxolamine shampoo.La Roche-Posay Pharmaceutical Laboratories, Asnieres, FranceLa Roche Posay Pharmaceut Labs, F-92602 Asnieres, FranceUniversidade Federal de São Paulo, Escola Paulista Med, Dept Dermatol, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med, Dept Dermatol, São Paulo, BrazilWeb of Scienc