When hair starts to get finer and loses its fullness, it is often due to an increase of oxygen supply near the stem cells. This increase in oxygen supply can be due to UV radiation or stress and slows down hair growth. Stemoxydine® in the Kérastase Densifique products help to lower the oxygen concentration in the affected areas of the scalp and help to increase new hair growth together with vitamin B and nourishing polymers. This cocktail of highly effective ingredients also has an intensively thickening effect on the hair, so the hair already feels fuller again while new hair is growing back. There is also a thickening line specifically tailored to the needs of men, called Densifique Homme.