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Sun block - wtf?
 

[Closed] Sun block - wtf?

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UVA is the 'tanning' ray where the skin darkens to try to prevent further damage, but it doesn't really work

Are you saying that UVA is not blocked by melanin, and therefore being tanned does not help? It seems to do something since black people seem to get less of the sun-damage kinds of skin cancer than other races, from what I can see with a 5 minute google..?

NOTE not saying you're wrong, I'm just interested and appreciate your insight jonv.

Realistically - you should wear sunscreen every day and almost all year round

I certainly do not want to do this. It's like being on pills for the rest of your life. No ta.

It seems to be a case of covering up where practical.


 
Posted : 11/07/2017 11:04 am
 Drac
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Most skin cancers are found on the face, head, neck and arms. It's that repeated exposure thing again........ unless your daily PPE includes a balaclava and Elvis collar?

I'm an SAS Elvis impersonator.


 
Posted : 11/07/2017 11:05 am
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Except when it comes to blackout blinds, mobile phone insurance, cargo trailers, bourbon, £1k cross bikes, etc (seemingly ad infinitum)

Oh get you. I was referring to sun cream smart arse.


 
Posted : 11/07/2017 11:07 am
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Very impressed buy the Aldi stuff we got recently. SPF50 in a yellow can that spread nicely, not like some horrible gelatinous tar like substance.


 
Posted : 11/07/2017 11:09 am
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Another P20 user, never burnt, or even tanned whilst using it.

Worth noting that Which? tests on once-a-day suncreams found that after six to eight hours the average sun protection factor (SPF) decreased by 74%.

I saw that, but it's unlikely (even on holiday) that I'd still be in the sun 6-8 hours later, could go for a bike ride and get bored of reading a book by the pool in that time. And -74% of 50 is still ~13, so even a fortnight of once a day use probably still wouldn't burn.

I'm more bothered that it lasts at least the length of any likely ride, even on a hot day, after that I can retire to a shaded bar to rehydrate 🙂


 
Posted : 11/07/2017 11:23 am
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I got burned on Saturday, first time in years. It hurts and I'm annoyed with myself.

What possible evolutionary advantage is it to have a skin type that means you can't go outside. 🙄

I'll nip to lidl later to try their stuff.


 
Posted : 11/07/2017 11:23 am
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Another P20 user, never burnt, or even tanned whilst using it.

^^ this

Although I do wonder what's in it for it to be so effective. A bit like 1990s DEET 😕


 
Posted : 11/07/2017 11:29 am
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Yeah that's pretty much my reasoning too tinas, just thought I'd mention it though in the interests of fairness.


 
Posted : 11/07/2017 11:31 am
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What possible evolutionary advantage is it to have a skin type that means you can't go outside.

You are assuming that you are on the winning side of that evolutionary change.

Most mutations are disadvantages!


 
Posted : 11/07/2017 11:32 am
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Clearly only One answer to this thread:

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Posted : 11/07/2017 11:36 am
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Are you saying that UVA is not blocked by melanin, and therefore being tanned does not help? It seems to do something since black people seem to get less of the sun-damage kinds of skin cancer than other races, from what I can see with a 5 minute google..?

Yes it is, but not completely and there are some papers suggesting that the effect of UV actually creates damage to melanocytes which are part of the skin damage / skin cancer pathway.

Dark / black skin has more melanin and hence better self protection, but that's double edged - with a perception that Afro-Caribbean skin types don't need sunscreen and then secondly because it doesn't 'burn' anywhere near as fast then you still have the harmful effect of UVA with no visible effect. Thirdly - black people do get skin cancer, but are less likely to notice it until later in its development making it more likely to have spread, etc.

My BiL is Antiguan. He doesn't wear sunscreen (although i tell him to) and when he and my sister go back on holiday / to visit his family they a/ take the piss because he has got paler and b/ he does visibly tan over the course of the 2 weeks there.


 
Posted : 11/07/2017 11:36 am
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If OPs wife is anything like mine so bought the expensive stuff based solely on how it smelt "I know it's a million quid, but it smells like holiday!".

Anyway, I noticed the £20 a bottle stuff my Wife bought scored a lower UVA star rating than the £3 a bottle stuff I bought from Morrisons. It's not as thick, not sure that has a bearing, but a quick top up every once in a while and no kids have been burnt on my watch.


 
Posted : 11/07/2017 11:55 am
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Some brands are photo-stable, others rapidly degrade in the sun.

Yes you read that correctly so always read the small print.


 
Posted : 11/07/2017 12:50 pm
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