Hello
Squalane is aged. Very long-lasting, 5-10 years, especially when stored in a favorable environment (not hot and not exposed to light). How to check if it is still in good condition, see 1. Color (must be free of any colour) 2. . Smell (must be odorless or almost no smell), but the expiration date specified on the product It's about product warranty. that if the product changes in any condition before such expiration The manufacturer will change the product for you.