Clé de Peau Beauté Concentrated Brightening Serum has the following features: Features Illuminating Complex EX that is a special combination of moisturizing and retexturizing ingredients which reduces the appearance of damage caused by environmental stress. Infused with the intensive brightening ingredient, 4MSK, it offers significant brightening effect that helps skin achieve a radiant, translucent, and plumped appearance. Improves the brightness and youthful appearance of skin, while preventing and reducing surface roughness caused by aging and the drying effect of environmental factors. Delivers skin a complexion of dewy translucence, smoothness, and inner radiance. Thanks Chai Hu technology, it helps firm the skin and promote increased suppleness.* Reduces dullness and discolorations and helps reduce yellow tones.* Powered with special ingredients developed through studies in anti-aging, it optimizes conditions for the vitality of skin.* *In vitro test.