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UV Index & Sunscreen Reapplication Timer
Sun Safety

UV Index & Sunscreen Reapplication Timer

Know when to reapply sunscreen based on UV index, skin type, and SPF

Dr. Priya Sammani
Medically Reviewed:
Dr. Priya Sammani, MBBS, PG Dip. FM
Updated on: April 2026

❓ Frequently Asked Questions (FAQ)

How often should I reapply sunscreen?
If you are outside, reapply every 2 hours, or after swimming and sweating. The power of SPF decreases not with time, but with exposure to the sun.

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Medical Disclaimer: These calculators are provided for educational purposes only and are not a substitute for professional medical advice. Always consult a qualified physician regarding any health concerns..