I am of irish/italian descent and I burn in the sun easily. I quit using any sunscreens due to toxic ingredients.
I read somewhere about using CO on the skin and it will help prevent burning. I tried it yesterday and applied it head to toe. Of course it soaked in immediately and did not feel greasy at all. I can tell you that I normally cannot stay out in the sun all day like that without burning. I gardened in and out of the sun for over 8 hours.
I decided to use some CO on my hair too as a conditioner. I kept a light amount on my hair in the warm sun all day then shampooed as usual. It took two washings for it to "feel clean" but this am it feels soft and well conditioned.