July 24, 2018 No Comments FREE Sephora Collection Sheet Mask at Sephora Stores Come into any Sephora store (July 27-29, all day) for a FREE Sephora Collection Sheet Mask. No purchase necessary. Locator. FREE Sephora Collection Sheet Mask at Sephora Stores – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.