Tolerability of Topical Retinoids

Background:Topical retinoids are first-line treatment options for acne vulgaris. These drugs, however, produce varying degree of cutaneous irritation within the first few weeks of treatment.Objective:Our purpose was to examine differences in tolerability of topical retinoids and assess whether these differences would be clinically meaningful.Methods:A PubMed search was performed for sources on topical retinoids in acne vulgaris treatment. Thirty-four clinical studies were analyzed.Results:Thirteen studies had statistically significant results on tolerability of retinoid based on retinoid, vehicle, concentration, or skin type. All studies classified most of skin reactions as mild-moderate. Large differences in the number of dropouts due to irritation were not identified.Conclusion:Irritation studies did not show a high frequency of clinically significant irritation with topical retinoids. We anticipate that the large variation in patient use of topical retinoids would likely account for more variation in response than differences between drug formulations.