Kérastase Densifique Jeunesse Serum 100mlRejuvenating hair serum for skin and hair, to support density. It helps maintain hair density and works against hair thinning. It protects the skin from oxidative stress and helps to create ideal conditions for the birth of new hair. Use: Apply once a day to dry or washed and towel dried hair. Divide the hair into 5 parts and apply 4 sprays to each of these parts, directly on the skin and massage. After that, spray the spray to the lengths of the hair.