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havana8
Moderator
 
Joined: 09 Sep 2005
Posts: 3449
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Sun Jul 29, 2018 6:22 pm  |
Many consumers are unaware the SPF rating on suncreams does not measure all-round sun protection, scientists say
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| Suncreams are designed to protect skin from UVA and UVB radiation, which can both increase the risk of developing skin cancer. SPF indicates the amount of protection offered against UVB, which is the main cause of sunburn, damaging the skin’s more superficial epidermal layers. Protection from UVA rays, which penetrate deep into the dermis, the skin’s thickest layer, is typically indicated by a separate star rating. |
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Separate research from the chemist chain Superdrug also revealed widespread consumer confusion. In its survey of nearly 1,000 consumers, 26% were unaware that the SPF of a product was a measure of a sunscreen’s ability to prevent UVB from damaging skin, and 8% wrongly thought the SPF was a measure of how many minutes a product will stop someone burning for.
Also, 20% wrongly thought a five-star rating meant protection against both UVA and UVB rays. |
Read the complete article here: https://www.theguardian.com/society/2018/jun/01/britons-risking-skin-damage-and-cancer-due-to-suncare-ignorance |
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havana8
Moderator
Joined: 09 Sep 2005
Posts: 3449
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Sun Jul 29, 2018 6:30 pm |
The Guide mentioned in the article:
SUNSCREENS
Quick reference guide
https://www.rpharms.com/resources/quick-reference-guides/sunscreens
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How much sunscreen should be applied:
Ensuring that sufficient sunscreen is applied is essential to ensure the expected level of sun protection is achieved. About 35 ml (about 7 medicine spoons-full or for a consumer, a golf ball sized amount) sunscreen is required to cover the average body of an adult. It is estimated that most people only apply about a quarter of the required amount of sunscreen. |
Wow! That's a lot of sunscreen. |
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Mon Jan 28, 2019 1:09 am |
I think most of us (speaking for myself) probably put on less than the amount required.
A simply google search results suggest 1 oz to cover the entire body AND reapply every 2 hours! I definitely fall short. |
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