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Tretinoin 0.025%, 0.05%, 0.1%. The exact mode of action of tretinoin is unknown. It is suggested that topical tretinoin decreases cohesiveness of follicular epithelial cells with decreased ...

Dr. Elise Olsen and associates (Olsen et al., 1997) discovered that reducing the frequency of tretinoin 0.05% cream from once daily to 3 times per week maintains, and in some cases, possibly ...