Revlon is a drugstore brand of cosmetics that makes a whole range of makeup and is particularly well known for its Colorstay brand. I contacted Revlon via email and got a very simple and clear answer: “Unfortunately, because of the way cosmetic ingredients are made and transported, we cannot guarantee that a product is gluten-free.”
I wouldn’t use their products because you can’t know for sure if anything has gluten in it. When you look at their labels, they’re very difficult to read because, as with most drugstore brands, the ingredient list is practically indecipherable. I wouldn’t feel safe using them, but I do really appreciate their straight forward answer.