This is a firming and astringent bio-serum. Collagen is an excellent firming agent. It tightens the skin's pores and improves the oval of the face. It is recommended for all skin types and is ideal for dehydrated, less toned skins or for thick skins with dilated pores. Direction for use: apply 1/2 cc of Sérum Collagène Natif on clean skin over the whole face, neck, and cleavage in a light ascending massage until the product has been completely absorbed.