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AhaBulb: Stuff Everyone Should Know · ahabulb.com/no-waterproof-sunscreen

Is any sunscreen really waterproof?

No. Water-resistant means 40 or 80 minutes.

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  1. Yes, if the bottle says waterproof
  2. No, it eventually washes off ✔
  3. Yes, if it says sport or water resistant

Why: FDA says there is no waterproof sunscreen. Water-resistant ones must say if they last 40 or 80 minutes while you swim or sweat.

Huh, didn't know that: After that time, or after towel drying, put more on.

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References

Answer: No, it eventually washes off. FDA says there is no waterproof sunscreen. Water-resistant ones must say if they last 40 or 80 minutes while you swim or sweat.

  1. FDA: Sunscreen and Sun Protection www.fda.gov/drugs/understanding-over-counter-medicines/sunscreen-how-help-protect-your-skin-sun
    There’s no such thing as "waterproof" sunscreen.
    Checked 2026-10-09.

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