Effect of Retinol on Swelling

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)