YSL Glossy Stain Undercoat is the first dual use primary color base coat by YSL Beauty. Available in three primary shades: cyan blue, magenta, and yellow, these undercoats can be worn alone for a bold lip, or mixed with any other Glossy Stain Shade to create a bespoke look.
Wear it alone for a bold lip
Apply several layers for a vibrant monochrome look
Mix it to create your own shades
Apply a thin layer of base coat on your lips. Let it dry, then coat it with the Vernis à Lèvres of your choice
Yves Saint Laurent products
Lip Color products