MAC's In Extreme Dimension Waterproof Mascara boosts lashes with a lightweight formula that provides intense length and volume. Its clump-free, flake-free design ensures a flawless look that lasts all day without smudging.With a robust, waterproof composition, it resists sweat and humidity, making it ideal for any activity, from a busy workday to a night out. Enriched with Panthenol and natural waxes, it delivers lush, dramatic lashes, while being safe for contact lens wearers and ophthalmologist tested.