WHAT IT IS: Lashes take on superb scale, structure and sweep with In Extreme Dimension Waterproof, M.A.C's lightweight, whipped mascara that saturates from root to tip, now in a waterproof formula. Enhancing volume, extending length, creating curl and staying put to the extreme, these highly defined lashes are clump-resistant and non-smudging ? and can now withstand moisture. KEY CLAIMS AND BENEFITS: Ophthalmologist tested, Safe for contact lens wearers, Lengthening, Volumizing, Curling, Non-clumping, Smudge-proof, Waterproof and tearproof, Sweat- and humidity-resistant, Features an all-day formula.