Unopened Badger sunscreens generally have a shelf life of two to three years from the date of manufacture (depending on the product). Expiration dates are printed on the crimp (top edge) of tubes. Opened sunscreens should remain good for one year after being used or until the date of expiration is reached. We cannot guarantee that an expired sunscreen will adequately protect you from the sun, so you should replace it. Note: Extreme temperature fluctuations may cause the natural ingredients in our sunscreens to expire early. We recommend that you store your Badger sunscreen in temperatures below 90 degrees. Extreme temperature fluctuations may negatively affect the efficacy.