- KEY INGREDIENT BIOTIN: It’s An Essential Component That Support Hair Health Which Is Also Used In Shampoo & Supplements. Now Use Biotin To Strengthen Your Lashes- CLEAN BASE: The Product Has Been Upgraded To A Clear Transparent Formula That Absorbs Into The Skin Without Stickiness- MASCARA APPLICATOR TYPE: Mascara Brush Is Used As An Applicator A Screw Brush Type Which Delivers The Serum To The Eyelashes & Deeply Upon The Roots Throughly