In Brief: Retinol helps reverse normal skin aging
In Brief
Researchers at the University of Michigan Medical School tested retinol in a six-month randomized controlled trial involving 36 men and women, ages 80 to 96. For 24 weeks, three times a week, study personnel applied a lotion containing 0.4% retinol (a minimal dose) to the inner portion of each participant's left or right upper arm (lotion without retinol was used on the other arm). After two, four, eight, 16, and 24 weeks, dermatologists who didn't know which arms had been treated with retinol compared the two arms for roughness, fine wrinkles, and overall severity of aging.
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