Meet Nailift La Base, Guerlain's new limited-edition expert base coat that enhances nail quality. It penetrates the top layers of your nails, fortifying and strengthening them in the long run. It also helps regenerate, nourish, protect and harden the upper layers of the nail. How to use: Apply as a base to protect your nails. You can then apply two coats of your favorite nail lacquer shade. Brand: GUERLAIN. Style Name: Guerlain 'Nailift La Base' Base Coat (Limited Edition). Style Number: 1194921.