YSL Lash Clash Extreme Volume WATERPROOF Mascara Noir/Deep Black. BNIB A couture mascara with an oversized brush and fragrance-free paraben-free formula for intense color and extreme volume with up to all-day wear. This volumizing mascara adds pigmented color, 200% more volume with up to 24-hour smudge-proof wear. The massive brush and formula coat each lash to deliver varying levels of volume from one to five strokes. Outfitted in sleek packaging, Lash Clash is an ultimate luxury must-have.