Applying brightly colored nail lacquer directly on to your nails can result in them becoming dry, brittle, and discolored. You can protect your nails by applying a base coat underneath colored lacquer. With a unique combination of ingredients, butter LONDON Base Coats nourish the nails and protect them from the potential damage that can be caused by colored nail varnish. In order to achieve a smooth, flawless finish to your manicure, apply butter LONDON Base Coat before you paint on your color. The base coat will smooth out any ridges and imperfections on the nail, leaving an even surface for the lacquer.