Take your lashes poolside with this ultra-luxurious waterproof mascara. Infused with Keratin and our proprietary Butter Blend, this incredibly creamy and buildable formula provides full volume paired with a lash maximizing brush to lift and lengthen with each stroke. About Physicians Formula: Since 1937, thoughtfully designed for all skin types, including sensitive skin. Thoughtful Formulations. Cruelty-Free. Responsible.