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 Is the Tightening Cream safe for pregnant women and nursing mothers? Instant Tightening & Restoring Serum On what areas of the skin can the Tightening Serum be used? How long will the Tightening Serum last? Optimals (Optimal-M + Optimal-V) Comments 0 comments Please sign in to leave a comment.