In a 6-month trial of nearly 300 adults with sun-damaged skin, 68% using tretinoin showed overall skin improvement.
Source: Olsen et al., "Tretinoin Emollient Cream: A New Therapy for Photodamaged Skin," Journal of the American Academy of Dermatology (1992) & Stern, "Treatment of Photoaging," New England Journal of Medicine (2004)












