Tretinoin emollient cream for photodamaged skin: results of 48-week, multicenter, double-blind studies.

BACKGROUND: The ability of topical tretinoin to improve certain signs of skin photodamage has been shown previously. OBJECTIVE: Our purpose was to assess the effectiveness of tretinoin emollient cream in maintaining or further improving photodamaged skin during extended use. METHODS: Photodamaged subjects who completed 24 weeks of once-daily use of tretinoin emollient cream 0.05% (n = 149) or 0.01% (n = 149) continued to use the same strength formulation in a 24-week double-blind extension. RESULTS: Maintenance of improvement or continued reduction in signs of photodamage was noted in both investigators' and subjects' evaluations of the 0.05% and 0.01% preparations; these results were confirmed by skin replica analyses. Cutaneous side effects were less common during the extension study than during the first 24 weeks of therapy. CONCLUSION: Both strengths of tretinoin emollient cream (0.05% and 0.01%) appeared safe and effective in the treatment of photodamaged skin during a 48-week treatment period.