IMO This is how i understand sun protection:
Vitamin D - all you need to get your recommended daily allowance (RDA) is 10 minutes a day
without sun protection for fair skinned people (me) and up to 20 minutes if you have olive or dark skin.
The sun is also good for problem (acne) skin, but again, only in small doses.
Sun protection should
always be worn even when the sun is not out because the harmful UVA/UVB rays will still get through - it's those that can cause cancer, age your skin (leather look is not cool!?:blink: ) and also burn your skin when you're not looking!
A factor 15 is the recommended lowest limit over here in Europe (and we don't get much sun!)
Also remember that the factor of a lotion is
not how long you can stay in the sun (for example factor 15) it's
15 x your own skins natural protection against the sun.
With modern sunscreens, they still allow you to tan but without allowing the harmful rays to get through, so don't worry too much - it'll just take a bit longer, but your skin will thank you when you're older!
Tips: Apply sunscreen 20-30 minutes before going out in the sun, re-apply regularly, and
always after going in the swimming pool...and try and seek shade between 11-3pm
Failing all that......FAKE IT! lol