One of the best topical antidotes for sunburn is fresh aloe vera.   If you do not have a plant in your kitchen to remedy minor burns, you can buy fresh, whole leaf aloe vera gel at your local health food store.  It is a natural anti-inflammatory and has humectant properties.   Products that are cooling should be avoided; ones with peppermint, menthol, or calamine lotion all contain alcohol which only further dehydrates skin tissue.
Shea butter and olive oil can be soothing emollients that are also moisturizing.  Cucumber is another good natural anti-inflammatory.  Aloe can be applied directly to the skin, or try mixing it in a bowl with sliced cucumber and ice, then creating a compress with a cotton towel.

Aloe Vera