Build lashes with 4mm of measurable extensions! Maybelline Illegal Length Fiber Extensions Waterproof Mascara has fiber extensions that break every law of lengthening. Created with the longest fibers ever in a mascara, Illegal Length's patented sealing formula and Fiber-Fix Brush give your lashes a dramatically longer look. Benefits: Waterproof No flakes 4mm of measurable extension Fiber-fix brush reaches each lash from different angles