The serum supports the skins natural repair process and optimized regeneration during sleep thanks to Chronolux Power Signal technology, helping to increase the rate of natural cell renewal and collagen production. Advanced Night Repair Serum penetrates the skin quickly, reducing the signs of aging and protecting it against the environmental stressors that accompany life in the modern world. After the first use, the skin will be well hydrated and look brighter. After three weeks of use, fine lines will be smoothed and the skin will become more supple and firm. How to use: Apply to cleansed skin before applying a moisturizer. Apply a few drops of serum and gently spread it all over the face and décolleté.