Why does the Tightening Serum leave a white residue? Administrator August 30, 2017 20:26 Follow The white film is actually a good thing! Take a look at the following video to find out why: Related articles Why isn't my makeup applying well after I use the Tightening Serum? Instant Tightening & Restoring Serum Title Advancement Volume and Pins Moa How long will it take to see results when using the Instant Tightening & Restoring Serum? Comments 0 comments Please sign in to leave a comment.