Okay so if you're really stranded on a desert island, makeup should be the least of your worries BUT (humor me), what's the one product you absolutely cannot live without?
My product would be Mary Kay's Oil Mattifier. It makes my skin look absolutely FLAWLESS. It's a lotion like liquid that you apply to your skin and it dries to a powdery finish. I don't wear foundation or coverup so this is perfect for me.