Lash Clash Mascara Volume Extrême, the clash between extreme volume and a waterproof formula that holds up for 48 hours. Discover Lash Clash Waterproof, the revolutionary new mascara from YSL Beauté. Choose a waterproof formula that lasts 48 hours, without compromising on extreme volume. Designed with a volume-expert formula & XXL brush for spectacular oversize results. Lash Clash is the symbol of an unashamed generation that holds its head high & isn't afraid to push the limits. +200% VOLUME* 48-HOUR HOLD** COUTURE BLACK FINISH OPHTHALMOLOGICALLY TESTED Lash Clash's formula boosts volume to the extreme, with innovative texturizing agents & smudge-proof boosters. Using a revolutionary cocktail of waxes, film-forming polymers & hold boosters, Lash Clash has the richest & thickest texture ever created by our laboratories: it densifies lashes passage after passage for extreme volume. With over 200%* volume in just 5 strokes, this ultra-innovative formula will stand up to the test of any day, thanks to its waterproof formula and 48H hold. In its ophthalmologically tested & care-enriched formula, Lash Clash contains extracts of Iris Florentina. This plant, sourced from the Jardins Collectifs De L'Ourika YSL Beauté, nourishes & protects your lashes day after day: they're softer, smoother & stronger. Lash Clash cares for all eyes, especially the most sensitive, and is suitable for contact lens wearers. *Up to 200% after 5 applications. **consumer test on 114 women