What It Is: A nourishing lash primer that helps to seamlessly amplify the effect of all Yves Saint Laurent mascaras. What It Does: Take lashes to the next level with this mascara base and secret ingredient for eye-catching flawless lashes. The pink formula dries down clear on lashes and creates added length and volume for mascara to adhere to. Application of this primer is clean and seamless thanks to the unique brush technology of the elastomer comb. Achieve the ideal full fan effect as this lash primer creates unrivaled length, curl and standout volume. Enriched with Ceramid R and Panthenol, two revitalizing ingredients that condition and improve lash appearance with every use. How to Use: Apply from the base of your lashes to the tips and let dry. Follow with any Yves Saint Laurent mascara for unbelievably striking lashes.