If you want long, thick, beautiful eyelashes, this is like a magic potion. Seriously an AMAZING product. I use it, my cousin uses it and I have recommended it to many friends and family. We've ALL had outstanding results. I've had numerous people ask me if I got eyelash extensions...it's that good! Within a few weeks you will notice a huge difference. My eyes tend to be sensitive but Grandelash MD has never irritated them at all. All you do is apply a thin strip across your top lashes and a thin strip along your bottom lashes. (Just as though you were applying a liquid eyeliner). You can use it in the morning and at night. I've always just used it at night, after washing my face, before bed. If you want longer, thicker lashes..try this. In my opinion it works just as well if not better than Latisse and there are no side effects and you don't need a prescription or a Dr. inorder to buy it. I would give this product a 10 star if I could.