Okay, so we're totally aware that that isn't exactly an oil (it's more of a serum), but we figured it was an honorable mention that should be included for anyone who wants to take baby steps into the world of facial oils. This incredibly lightweight formula can be applied before moisturizer to help blemish-prone skin chill out. It uses 5 percent niacinamide and zinc PCA to cool the skin, balance the pH, and make sure breakouts stay far, far away.