To treat sunburn, apply essential oils diluted with a carrier oil to the affected area. Aloe vera oil, with its high “closeness to topic” score, provides soothing relief. Chamomile oil reduces inflammation and heals the skin. Lavender oil calms and soothes the skin. Peppermint oil cools and refreshes. Tea tree oil fights infection. Other effective oils include geranium, rosemary, and thyme. Dilute 2-3 drops per 10ml carrier oil and apply gently to the sunburn, avoiding broken skin. Essential oils should not be ingested or applied undiluted to the skin. If sunburn is severe, seek medical attention.