The Efficacy and Safety of 660 nm and 411 to 777 nm Light-Emitting Devices for Treating Wrinkles

A randomized, double-blinded clinical trial investigated the efficacy and safety of low-level light therapy (LLLT) using 660 nm red LEDs and 411 to 777 nm white LEDs for treating facial wrinkles in 52 adult female participants. Over 12 weeks, participants received daily facial irradiation with 5.17 J of either red