Is SPF Waterproof?
No, there is no such thing as waterproof sunscreen. The FDA no longer permits manufacturers to label sunscreen as "waterproof" because sweat and water wash sunscreen away from the skin. Instead, sunscreens are labeled as "water-resistant," indicating they maintain their SPF level for a specified time (usually 40 or 80 minutes) when exposed to water.
The terms "waterproof" and "sweatproof" are outdated. Manufacturers now use "water-resistant" to describe sunscreens that offer some protection during water activities or sweating. This water resistance is temporary, and reapplication is crucial after swimming, sweating, or toweling off.
- Water-resistant: This means the sunscreen maintains its SPF for a specific amount of time (indicated on the label) while exposed to water. After that time, reapplication is necessary.
The American Academy of Dermatology advocates for water-resistant sunscreens, recognizing the reality of everyday sweating and water exposure. Choosing a water-resistant sunscreen with a higher SPF and frequent reapplication will offer better protection than relying on a product labeled "waterproof" (which doesn't exist).
Examples of water-resistant sunscreens highlight this distinction. Many products, like Coppertone Water Babies SPF 50, are labeled as "water resistant (80 minutes)," clearly stating the limitation of the protection.
Choosing the Right Sunscreen
To ensure optimal sun protection:
- Select a broad-spectrum sunscreen with an SPF of 30 or higher.
- Choose a water-resistant sunscreen.
- Reapply sunscreen every two hours, or more frequently if swimming or sweating.
Remember, no sunscreen provides complete protection. Combining sunscreen with other sun protection measures like shade, protective clothing, and hats is recommended for comprehensive sun safety.
