Sunburn - Apply WHAT!!
Believe it or not, Peppermint oil is cooling and soothing to sunburns. Make a spray and use neat or 5-10 drops in a few tbps's of distilled water. It will help protect against infection, however, consider that lavender or frankincense has better healing properties for burns. Apply lavender or frankincense then layer with peppermint spray to drive the oils and cool and comfort the skin.