Effect of Retinol on Hyperpigmentation

Prospective, randomized, double-blind assessment of topical bakuchiol and retinol for facial photoageing (2019)

Efficacy and tolerability of a double-conjugated retinoid cream vs 1.0% retinol cream or 0.025% tretinoin cream in subjects with mild to severe photoaging (2017)

Retinyl propionate and climbazole combination demonstrates clinical improvement to the appearance of hyperpigmentation and deep wrinkling with minimal irritation (2017)

One-year topical stabilized retinol treatment improves photodamaged skin in a double-blind, vehicle-controlled trial (2015)

A randomized, double-blind, split-face study comparing the efficacy and tolerability of three retinol-based products vs. three tretinoin-based products in subjects with moderate to severe facial photodamage (2015)

Improvement of photoaged facial skin in middle-aged Japanese females by topical retinol (vitamin A alcohol): a vehicle-controlled, double-blind study (2009)