10 Makeup Experts Reveal the Products They Can't Live Without

"While probably one of the most boring beauty products to buy, I always tell people brow gel is one of the most important. This one in particular will groom brows and keep them in place all day. It is totally colorless, so it works well over brow pencils or shadows and looks equally great just on its own if you don't fill your brows. It's definitely an essential — I use it on every single one of my clients (guys and girls) and on myself every day!" — Amber Dreadon

MAC Brow Set ($17)