Hi Nina,
Someone on a Weston Price mailing list that I'm on found that they stopped burning so easily after they upped their intake of fish oil. So maybe an omega 3 deficiency makes you more prone to burning? Coconut oil is good to use externally.

Here is the post, i have left out name and email address:

"Just thought you all might be interested in my followup querys. I
googled sunburn and fish oil and came up with some people who are doing
research on this.

One of them is a professor in the UK and she has sent me references to
papers about it. They have followed people for up to 3 months and looked
at the reduction in burning when they take fish oil and have found a
significant reduction in burning.

She speculated that that the carcinogenic mediators are reduced in the
skin.

Studies in animals have shown that UV light induces immunosupression in
skin and that the changes in skin lipids that result from taking fish
oil reduces that immunospression ---which results in less skin cancers.

They are wanting to do more research in it but I suspect the funding may
not be too readily available--- not enough money to be made from drugs
and sun creams.

I still have not burned nor freckled up. Amazing!!!!!"