will I get a tan in England if I am outside for around 40 minutes with short sleeves using factor 50 in summer?
2016-04-08 7:34 pm
In school we do outdoor P.E. every Monday and we have to wear a short sleeve tshirt. P.E is for 40 minutes, and I don't want to tan.
回答 (3)
2016-04-08 7:43 pm
Depends on how sunny it is and how fair your skin is
SPF stands for sun protection factor. Dermatologists say it should stand for sunburn protection factor, as it only refers to how good the cream is at protecting against UVB, the rays that cause sunburn.
'Few of us spend 12 hours in the sun and factor 30 would give 7½ hours burn-free. If you spend only a few hours in the sun, whether you wear factor 15, 30 or 50 will make little difference'
No matter what your SPF factor, it is crucial you reapply your cream every few hours.
A cream with an SPF of 15 means you can stay in the sun for 15 times longer than you could with no sun cream without getting burnt - as long as you have it on thick enough and keep reapplying it.
So, if you start to redden after 15 minutes, a cream with an SPF of 15 should allow you to stay out for 225 minutes, or 3¾ hours, before you burn.
This is the case no matter how many times you reapply it. After 3¾ hours, the only safe solution is to find shade.
An SPF factor of 30 allows you twice as much time in the sun as a 15 - but should be reapplied every few hours.
So, an SFP 30 should let you enjoy 450 minutes or 7½ hours without burning. After that you can reapply as much as you like and it won't protect you.
If you burn after 15 minutes and plan to spend 12 hours in the sun, factor 50 should let you do so without burning. Reapplication is crucial.
But as few of us spend 12 hours in the sun and factor 30 would give 7½ hours burn-free, factor 50 is probably not worth it.
If you spend only a few hours in the sun, whether you wear factor 15, 30 or 50 will make little difference.
Read more: http://www.dailymail.co.uk/femail/article-2367634/Is-ANY-point-buying-Factor-50.html#ixzz45H2KlREh
Follow us: @MailOnline on Twitter | DailyMail on Facebook
SPF stands for sun protection factor. Dermatologists say it should stand for sunburn protection factor, as it only refers to how good the cream is at protecting against UVB, the rays that cause sunburn.
'Few of us spend 12 hours in the sun and factor 30 would give 7½ hours burn-free. If you spend only a few hours in the sun, whether you wear factor 15, 30 or 50 will make little difference'
No matter what your SPF factor, it is crucial you reapply your cream every few hours.
A cream with an SPF of 15 means you can stay in the sun for 15 times longer than you could with no sun cream without getting burnt - as long as you have it on thick enough and keep reapplying it.
So, if you start to redden after 15 minutes, a cream with an SPF of 15 should allow you to stay out for 225 minutes, or 3¾ hours, before you burn.
This is the case no matter how many times you reapply it. After 3¾ hours, the only safe solution is to find shade.
An SPF factor of 30 allows you twice as much time in the sun as a 15 - but should be reapplied every few hours.
So, an SFP 30 should let you enjoy 450 minutes or 7½ hours without burning. After that you can reapply as much as you like and it won't protect you.
If you burn after 15 minutes and plan to spend 12 hours in the sun, factor 50 should let you do so without burning. Reapplication is crucial.
But as few of us spend 12 hours in the sun and factor 30 would give 7½ hours burn-free, factor 50 is probably not worth it.
If you spend only a few hours in the sun, whether you wear factor 15, 30 or 50 will make little difference.
Read more: http://www.dailymail.co.uk/femail/article-2367634/Is-ANY-point-buying-Factor-50.html#ixzz45H2KlREh
Follow us: @MailOnline on Twitter | DailyMail on Facebook
2016-04-10 5:58 am
sunscreen
2016-04-08 8:36 pm
One 40-minute session in ordinary sunlight while wearing SPF 50 lotion is not going to tan you.
Don't even try to tan. A tan represents skin damage.
Don't even try to tan. A tan represents skin damage.
收錄日期: 2021-04-21 17:52:04
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