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Q&A What is SPF in sunscreen cream?

What is SPF in sunscreen creams? I go to 2500m-4000m altitude. What should I use? And I've heard that SPF more than 55 is not for men. Does more SPF mean more sun protection?

3 answers  ·  posted 10y ago by ALH‭  ·  last activity 5y ago by System‭

Question uv-protection