Extreme UV index levels? What you should know about applying sunscreen

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The NEA advises those who are outdoors to apply sunscreen of at least SPF 30 and reapply it every two hours.

UV index readings of 11 and above are considered extreme, while those between eight and 10 are considered very high.

According to the NEA, it is common for the UV index to reach very high and extreme levels between 11am and 3pm on a day with little cloud cover.“Overexposure to UV radiation can cause damage to the skin and eyes, and suppress the immune system,” said dermatologist Heng Jun Khee from DermAlly Specialist Skin Clinic and Surgery.

Regarding the type of sunscreen to use, Dr Heng said: “The higher the SPF, the better protection it will offer against UVB radiation.” “The protection from SPF 30 is about 97 per cent, whereas that from SPF 50 is only slightly more, at 98 per cent,” he said. It should also be reapplied every two hours in a setting of ongoing sun exposure or immediately after swimming or sweating.

 

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