About Jeffree Star Cosmetics F*ck Proof Mascara Jeffree Star’s first-ever mascara is here! Coat your lashes with Jeffree Star Cosmetics F*ck Proof Mascara. The water-resistant, everything-proof formula adds dramatic length and volume to lashes without any smudging, smearing, or clumping—no matter what. Discover your best, boldest lashes that won’t budge. Why It's Special A water-resistant, sweat-proof, smudge-proof, everything-proof formula that won’t budge Unique, grooved brush grips every last lash for dramatic fullness, length, and definition Infused with shea butter and biotin for care for lashes while you wear it Tubing formula removes easily with warm water at the end of the day