Here are some tips for anyone that is suffering with sunburn, although if it is really bad I would suggest visiting your GP (please remember I am not a doctor)
1- Get out the sun straight away or keep your skin covered Cover up the affected areas and stay in the shade until your sunburn has healed. I would also recommend to wear loose so that your skin is not further irritated.
2- Take pain relief (over the counter)
Painkillers relieve the pain and reduce inflammation caused by sunburn. Non-steroidal anti-inflammatory drugs such as ibuprofen are ideal and should be continued for a period of at least 48 hours if there are no contraindications. Paracetamol will help with the pain but has little effect on inflammation.
3- Keep cool Apply a cold compress to the skin (a clean towel dampened with cool water) or take a cool bath or shower. Make sure the shower isn't on full power as this can be very sore. If blisters are starting to develop, then a bath is preferable. Be sure to gently pat skin dry when you get out rather than rubbing skin with a towel.
4- Peeling After a bath or shower, use un-perfumed creams or lotions to soothe the skin. Repeat applications of this for up to several weeks depending on how bad the burn was. Aloe vera and soy-containing gels or lotions can be beneficial in soothing the skin. GPs can prescribe you lotions to put on depending on how bad the burn is. Avoid using creams or lotions that contain petroleum, benzocaine, or lidocaine in, they can either trap heat in the skin or cause local skin irritation which you don't want!
5- Leave blisters alone Try not to pop blisters as this can lead to infection and scarring. They will settle by themselves after a few days. In the meantime, treat the skin gently.
6- Rehydrate Sunburn can encourage fluid loss through the skin. Drinking plenty of water will prevent dehydration and help your body recover. Alcohol should ideally be avoided during this time as it will make dehydration worse.
To read about avoiding sunburn click here