Sisley';s Radiance Anti-Aging Concentrate helps the face regain the natural radiance of younger looking skin. Because a glowing and even complexion is essential to a youthful appearance, Sisleÿa Radiance Anti-Aging Concentrate is specifically formulated to address radiance in a global way. Smooth, luminous skin: the skin';s surface reflects around 10% of the light it receives whereas the other 90% directly penetrates the skin. To maintain the glowing effect of a young radiant skin, the surface microcirculation must be kept dense and well-structured. Expect exceptional results after just four weeks of use: your complexion looks more radiant, fresher and more luminous, the intensity of brown spots is visibly reduced, and skin looks even, smooth and resplendent.