Easy DIY Sunburn Solution To make, pour four cups boiling water over two cups of fresh mint leaves and three or four tea bags. Cover, let stand 10 minutes, then strain. Let cool, and transfer to a glass jar. Apply to sunburned skin with a washcloth or cotton balls. The infusion keeps for a few weeks in the refrigerator. Read more at Marthastewart.com: Sunburn Solution - Martha Stewart Health