This common first aid item is used to treat burns, scars, and other wounds, but it’s also great for keeping wrinkles at bay when applied topically. Olivia Munn has a few skincare secrets, and one is eating lots of Japanese potatoes which are, apparently, a good source of the stuff. She’s not the only celeb trying to get in her daily dose of hyaluronic acid; Jada Pinkett Smith swears by the stuff along with tap water. Sometimes, it’s best to just keep it simple. Try this pure hyaluronic acid moisturizing serum if you’re ready to hop on the bandwagon.