Gwyneth Paltrow maintains her flawless skin by using a painful face roller as part of her beauty routine.The 47-year old’s makeup artist Georgie Eisdell reveals the star’s intense self-care regimen, which includes the metal-spiked item – made from minerals like jade.“Before we do any makeup, GP smooths her skin with Microderm (a skincare exfoliant from Paltrow’s Goop line) to get maximum glow,” Eisdell said in a new post on Goop.com.