title: Clinical Evaluation of a 4% Hydroquinone + 1% Retinol Treatment Regimen for Improving Melasma and Photodamage in Fitzpatrick Skin Types III-VI.
abstract: The bene ts of monotherapy with hydroquinone for melasma and retinoids for photodamaged skin is well established. Here we report results of a hydroquinone skincare regimen designed for melasma treatment combined with a cosmetic retinol cream on subjects presenting with both melasma and facial photodamage in a 24-week study. Improvement in melasma and photodamage ef cacy pa- rameters of melasma pigmentation intensity and melasma area and severity index (MASI), as well as overall photodamage and mottled hyperpigmentation were found by week 4, the rst post-baseline time point. By week 8 signi cant improvements were also found in melasma disease severity assessment, tactile roughness, ne wrinkles, crepiness, actinic lentigines, and laxity. By week 18 signi cant reduction in coarse wrinkles was evident. Bene ts persisted through the study end on the panel of 31 subjects, with over 3⁄4 of par- ticipants demonstrating improvements in 10 of the 11 graded attributes. For the remaining attribute, coarse wrinkling, approximately 50% of the panel showed improvement. The regimen produced an average of "marked improvement" in melasma severity (51-75% improvement). Results of tolerance evaluations documented overall treatment mildness for a majority of the study participants. Subject questionnaires concur with high ratings of the study regimen for tolerability, ef cacy perception, product aesthetics and overall treat- ment satisfaction in subjects of Fitzpatrick Skin Type III-VI classi cation with melasma and photodamage in mild-to-moderate severity. <em>J Drugs Dermatol. 2016;15(11):1435-1441.</em>.
authors.forename: Marta I
authors.initials: MI
authors.lastname: Rendon
authors.forename: Sylvia
authors.initials: S
authors.lastname: Barkovic
mesh_terms: D000279:Administration, Cutaneous; D000328:Adult; D000368:Aged; D004339:Drug Compounding; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D006873:Hydroquinones / Q000008:administration & dosage* / Q000737:chemistry; D017495:Hyperpigmentation / Q000175:diagnosis / Q000188:drug therapy; D008548:Melanosis / Q000175:diagnosis / Q000188:drug therapy*; D008875:Middle Aged; D015595:Skin Aging / Q000187:drug effects* / Q000473:pathology / Q000502:physiology; D017592:Skin Care / Q000379:methods*; D012880:Skin Pigmentation / Q000187:drug effects* / Q000502:physiology; D016896:Treatment Outcome; D014801:Vitamin A / Q000008:administration & dosage* / Q000737:chemistry
chemical_list: D006873:Hydroquinones; D014801:Vitamin A; C031927:hydroquinone