Honestly, this is the best eyeliner I have ever used! It is Make Up For Ever's Aqua Eyes... Usually by the middle of the day my eyeliner has traveled to the crease of my eyes & I look like a raccoon. (winter & summer) I read about this eyeliner for something to wear while at the pool, but it mentioned it was good with the heat. At first, I bought it in the black color and loved it as a base. It was a little too drastic for a daytime look. Then, I got it in the brown (2L)... LOVE!! Can't wait to try other colors! I got them at Sephora, but here is the link to Make Up For Ever.