I had to put on sunscreen.

I had to put on sunscreen.

So I think half of my book advance went into sunscreen.

So I think half of my book advance went into sunscreen.

Creamy sunscreen is often applied to dry skin. The classification of neutral skin generally has no strict rules. Any kind of skin care products are burden to the sensitive skin. So it is recommended to choose pure physical sunscreen products.

And that could be the basis of a sunscreen because sunscreens work by absorbing ultraviolet light.

I'm probably the only person you'll ever meet who rode his bicycle across the Sahara desert without sunscreen.

Water based sunblock with a strong penetration is often applied to oily skin. Sunscreen spray is also a good choice.

Remember to apply sunblock half an hour in advance, because sunscreen products take time to completely penetrate into the skin.

So melanin was recruited, in our lineage, and specifically in our earliest ancestors evolving in Africa, to be a natural sunscreen.

This was no small feat, because if you listen to dermatologists, they say that you should have a shot glass full of sunscreen.

This was no small feat, because if you listen to dermatologists, they say that you should have a shot glass full of sunscreen.

Because you are exposed to sun longer during the military training, you have to apply the sunscreen products once every two hours to lengthen the effect. So keep doing it.

So, living at the equator, we got lots and lots of ultraviolet radiation and the melanin this wonderful, complex, ancient polymer compound in our skin served as a superb natural sunscreen.

For a full year, A.J. Jacobs followed every piece of health advice he could from applying sunscreen by the shot glass to wearing a bicycle helmet while shopping. Onstage at TEDMED, he shares the surprising things he learned.