Can you tell me what occurs if you get badly sunburnt once?

Sometime : 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. Blisters occur with a severe sunburn.