Is Sunscreen Waterproof?
No, there is no such thing as waterproof sunscreen.
The term "waterproof" sunscreen is misleading. Sweat and water wash sunscreen off the skin, reducing its effectiveness. The FDA (Food and Drug Administration) no longer allows manufacturers to label sunscreen as waterproof for this very reason. FDA Instead, the term "water-resistant" is used, indicating that the sunscreen maintains its SPF (Sun Protection Factor) for a specified time (typically 40 or 80 minutes) while swimming or sweating. EltaMD Even water-resistant sunscreen requires reapplication after this time. FDA
Understanding Sunscreen Labels
It's crucial to understand sunscreen labeling. Look for the "water-resistant" designation and note the duration of its effectiveness. Reapplication is key to maintaining adequate sun protection, regardless of the label. AAD
Why Reapplication is Essential
- Sweat and water wash away sunscreen: Even water-resistant sunscreens are affected by prolonged exposure to water or perspiration.
- Maintaining SPF levels: Reapplication ensures consistent protection against harmful UV rays.
- FDA recommendations: The FDA emphasizes the importance of reapplication for all sunscreens, regardless of whether they are labeled water-resistant.
The Importance of Water-Resistant Sunscreen
While "waterproof" is inaccurate, water-resistant sunscreen provides better protection during water activities than non-water-resistant options. The water-resistant label indicates a level of protection against washing away, although complete protection isn't guaranteed. The American Academy of Dermatology supports the idea that effective sunscreen should be water-resistant due to the fact that everyone sweats daily. Reddit
