An optical colour perfector for the nails thanks to a specific optical azurant that react to UV light<br />Used as a base under a nail polish, it restores its true shade : no more colour that turns into a dirty beige, a dubious yellow or a dull red<br />Applied on non yellowed, non stained nails, it will give an original bluish effect<br />As it dries it becomes matt and so also suits men whose nails have been stained or yellowed, perhaps due to nicotine, and who are concerned about the appearance of their nails">