Body SPF · Sub-chapter 03
Reapplying SPF on vacation.
The FDA guidance is clear: every 2 hours, and after swimming, sweating, or towel-drying. The hard part is making that work in a real day at the beach.
Editorial, not medical advice. General sun protection guidance from our editors. Speak with a dermatologist for personal advice.
82 how-to's · Updated 2 May 2026 · Avg. 4 min per piece · Edited by Nelly · Beauty & Style Director
FDA guidance on reapplication
The FDA recommends reapplying broad-spectrum, water-resistant SPF 30 or higher every 2 hours — and immediately after swimming, sweating heavily, or towel-drying. Water-resistant labels indicate 40 or 80 minutes of water exposure, not indefinite protection. After that window — or after swimming — reapplication is needed.
A reapplication schedule that holds
- Before going outside: full application everywhere on exposed skin.
- 2 hours later: full reapplication. Do not skip back, shoulders, or feet.
- After every swim: reapply even if the 2-hour mark has not been reached.
- After towel-drying: towel friction removes a meaningful amount of sunscreen.
- Before return travel: driving means continued UV exposure through car windows.