L’Oréal Paris presents Unbelievabrow, our first longwear brow gel to fill & thicken for brows that last. Brows for days. Enhanced up to 48 hours. Build and sculpt your dream brow from natural to intense. Formulated with longwear polymers that create a waterproof film to seal in pigments onto brow hair and spherical silica for natural looking color. Waterproof. No smudge. No transfer. Sweat-Resistant.