Tips: 1. It's Waterproof, and would Not stick on Cup. 2. it's better to use the lip balm or based lip items before putting it on your lip. 3. It will have good effect if you apply a very thin layer. 4. It will looks a little darker if you use lip brush than your hands. so Lip brush is strongly recommended. 5. Because it is the effect of matte velvet ,you can touch and drink water, but you can not eat something grease.