How should I store the Tightening Serum? Administrator August 30, 2017 20:46 We recommend Jouvé products be stored in a cool, dry place out of direct sunlight. Related articles How does the Instant Tightening & Restoring Serum work? How long will it take to see results when using the Instant Tightening & Restoring Serum? When will the Tightening Serum expire? Comments 0 comments Please sign in to leave a comment.