SPF on sunblock indicates time we can stay in the sun without sunburning. THen w!


Question:

Answers:
no sunscreen is completely safe for any extended time so you must always use a hat and shirt as well. you need to reapply sunscreen because you sweat, you swim and it is slowly absorbed into your skin.

Other Answers:
Because on the the highest SFP is 40, so that would mean every 40 mins, less then an hour to reapply
The Spf stands for sun protection factor. that is how long you can wear that coat of sun screen without burning. If the SPF is 45 then you must reapply in 45 minutes to start over.
No,SPF only indicates the strength of the blockage lotion. You need at least 15 but you must reapply it every hour because it evaporates and becomes non-effective.
Answers:

The consumer health information on youqa.cn is for informational purposes only and is not a substitute for medical advice or treatment for any medical conditions.
The answer content post by the user, if contains the copyright content please contact us, we will immediately remove it.
Copyright © 2007-2012 YouQA.cn -   Terms of Use -   Contact us

Health Q&A Resources