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The science of protection

When it comes to sun protection, the higher the SPF number the better, right? And what does the PA+ stand for anyway? L'Oreal's expert in photoprotection lays bare the facts. By Cheah Ui-Hoon

SO here are the definitive guidelines: You want to apply sun protection of at least SPF15 but it need not be higher than SPF50. You also want to look for creams or lotions that screen out UVA besides UVB, especially in Asia where the sun is more intense.

By now, sun protection is such a...

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