Journal of Cosmetic Dermatology
Efficacy and Safety of Yellow Light Monotherapy Versus Yellow Light Combined With 20% Vitamin C for the Treatment of Melasma: A Single‐Center, Randomized, Double‐Blind, Placebo‐Controlled Clinical Study
ABSTRACT Background Melasma treatment remains challenging due to limited effective and safe options. This study evaluated the efficacy and safety of yellow light phototherapy alone versus combined with 20% vitamin C in treating melasma. Methods Seventy‐one patients were randomly assigned to receive twice‐weekly yellow light phototherapy combined with either 20% vitamin C solution ( n = 35) or its corresponding vehicle ( n = 36). The primary outcome was the change from baseline in modified Melasma Area and Severity …