It will depend on how you care for your mask. We say 10 or more uses but some members of our team have been using their masks longer and some have had them last 8 uses.  It is important after each use you cleanse your mask(s) with soap + water; lay them on the sheet and store back in their tin in a cool, dry space. This will give your mask a longer life, keep its stickiness and let your mask(s) live up to their full potential.