Does High SPF Provide Better Sun Protection?
Discover the truth about high SPF sunscreens and their effectiveness against UV rays. Learn more about proper application.
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High SPF is not pointless. While SPF 30 blocks about 97% of UVB rays, SPF 50 increases that protection slightly to 98%, and SPF 100 can block 99%. However, the key is applying sunscreen properly: use a sufficient amount and reapply every two hours, or more often if swimming or sweating. High SPF can offer extra peace of mind and better protection for those with fair skin, history of skin cancer, or during prolonged sun exposure.
FAQs & Answers
- What is the difference between SPF 30 and SPF 50? SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks about 98%, providing slightly better protection.
- How often should I reapply sunscreen? It's recommended to reapply sunscreen every two hours, or more often if swimming or sweating.
- Is a higher SPF always better? Higher SPFs provide more protection, but the difference is minimal. Proper application is crucial for effectiveness.
- Do I need sunscreen on cloudy days? Yes, UV rays can penetrate clouds, so it’s important to wear sunscreen even on overcast days.