'Genie in a Bottle' from Deborah Lippmann is a base coat to neutralise the tone of the nail plate and whiten tips. Formulated with finely mulled, ultra sheer violet pigments to perfect dull, stained or yellow tinged nails for a brighter, natural tone. Light-reflecting mica gives nails a youthful, healthy-looking appearance. Can be worn alone or under your favourite nail polish. E.N.