Contents hide 1 The Expiration Date: Understanding Sunscreen’s Shelf Life 2 The Importance of Expiration Dates 3 Factors Affecting Sunscreen’s Shelf Life 4 Formulation and Active Ingredients 5 Packaging and Container Type 6 Storage Conditions 7 Heat and Light Exposure 8 Opened vs. Unopened Containers 9 Average Shelf Life Estimates 10 Signs of Expired Sunscreen … Continue reading How Long Does Sunscreen Last