Seeing Double! The Product With one stroke, Double Trouble's large twisted fiber brush will curl your lashes and give them extreme volume like never before. Its black formula is uniquely made to last you all day what more could a girl ask for? Opthalmologically tested The Result This mascara is one smooth operator, it works to separate the lashes and evenly deposit its creamy formula without clumping. Want to turn up the volume and curl? That's easy; just apply more coats, like we said it won't clump! The Wow Factor Double the effect - watch out, such extreme volume and curl can get you in trouble!