Is SPF Over 30 Necessary for Effective Sun Protection?

Discover why SPF over 30 could be worth it for sun protection and skin health.

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SPF over 30 is not a waste. While SPF 30 blocks about 97% of UVB rays, higher SPFs offer slightly more protection. SPF 50 blocks around 98% and SPF 100 blocks about 99%. For most people, SPF 30 is sufficient, but higher SPF can be beneficial for those with very fair skin, a history of skin cancer, or extended sun exposure. Always remember to apply sunscreen generously and reapply every two hours, or more often if swimming or sweating.

FAQs & Answers

  1. What is the difference between SPF 30 and SPF 50? SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks around 98%. The difference in protection is slight but can be significant for certain skin types.
  2. How often should I reapply sunscreen? Sunscreen should be reapplied every two hours, or more frequently if swimming or sweating, to maintain effective protection.
  3. Can people with darker skin skip sunscreen? No, everyone, regardless of skin tone, should wear sunscreen to protect against UV damage and skin cancer.
  4. What does SPF stand for? SPF stands for Sun Protection Factor, which indicates the level of protection a sunscreen provides against UVB rays.

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