Sesame seed oil is a good natural sun filter and Shea nut butter fends off UV rays but should you find you have over done it and are suffering from a touch of sunburn, the best treatment, like any other burn is Lavender essential oil. As soon as possible immerse yourself in cold water for at least 10 minutes, then gently rub pure lavender essential oil all over the affected area. With a bit of luck by morning you should be pain free and much less red.