Butter Lash Splash Mascara by Physicians Formula is a luxurious waterproof mascara designed to give your lashes maximum volume, lift, and length with a single swipe. Its rich, creamy formula is infused with lash-nourishing Keratin and a proprietary Butter Blend of Murumuru, Cupuaçu, and Tucuma butters sourced from the Amazon. These nutrient-rich ingredients condition and strengthen lashes while delivering a bold, smudge-proof finish. Gentle enough for sensitive eyes, this mascara is perfect for all-day wear and layering for extra drama.