How long will it take for sunburn to fade on its own?

Two days to One Week: The location of sunburn and your skin type determine the duration. Face sunburns can fade within 2-3 days while backs, chest, and arms can take a week. It is most important to avoid repeated sunburns as this can prolong recovery and add to skin cancer risk. A sunburn is a wake up call to remind you that your skin should not go unprotected in the future. See a dermatologist if your not healed.