Active ingredients Trans-4-Aminomethylcyclohexanecarboxylic acid and Vitamin C can rapidly suppress the darkening of the skin. Sodium Hyaluronate ensures a long-lasting moisture lock, so your skin feels silky and smooth.Application method:After cleansing, apply Whitening & Moisturizing Mask avoiding eyes, lips, and mucous membranes. Let stand for 15-20 minutes. Use 1-2 times per week.