This is a PRO Tool! This is a must-have tool for a makeup artist, a black eyeliner and lash application all in one! We were waiting for it too long... It's a high-quality liquid eyeliner, I tested it and I can say, it is waterproof, smudgeproof and lasts the entire day if you want to. I got 3 Liners with a great offer as I am usuing it every day for myself and my clients. Go get it girl!