IT Cosmetics Tightline 3-In-1 Lash Primer, Eyeliner & Black Mascara - Lengthens & Conditions Lashes - Ultra-Skinny Wand - Infused With Collagen, Biotin, Peptides & Antioxidants - 0.12 fl ozTightline Lash Thickening Black Mascara Primer is a bestselling, award winning black lash primer, eyeliner, and mascara all in one. This black, lash defining and lengthening mascara primer lays down black pigment between each and every lash for instant tightline eyeliner definition and the look of a fuller lash line. Unlike most mascara brushes that leave the first third of your lash roots bare, this groundbreaking skinny wand separates individual