Is olive oil good for treating sunburns?

Not really: Cool compresses; aloe vera gel (avoid the ones with Benzocaine as they can cause allergic skin reaction); topical otc steroid cream for more painful burns (remember to use very sparingly to avoid potential skin damage). Prevention is even better: sun blocks that protect against uva & uvb applied b4 exposure; long sleeves, broad-brimmed hats, pants. For sever blistering, see fp.