Stick to basics. Sunburn is response of the tissues to injury from solar radiation. It is simply inflammation which means increase blood flow to the area to promote healing. Do not use ice as this can injure already injured skin. Cool water soaks can help as can taking anti-inflammation medicines like Motrin or advil (ibuprofen). Avoid any further damage as this can cause scarring . Good skin cream applied daily/gently helps.
Not much help. Not much help but no harm either.
Moisturizes/protects. I'm not aware of research studies showing to what degree coconut oil helps sunburn but many people claim it helps. It moisturizes and protect the skin and has antioxidant and antimicrobial properties. It may be best combined with other natural remedies as discussed in this article: http://www.bustle.com/articles/83496-using-coconut-oil-for-sunburns-can-work-if-you-follow-these-7-simple-steps. Read more...