But it's difficult for any first aid trainee to ascertain it and does not have any importance to give first aid. We in first aid classify it according to the layer of skin involved. Skin has three layers namely epidermis outermost layer, dermis middle layer and hypodermis the innermost layer. If upper most layer is involved it is called first degree burn, the skin becomes red, painful but do not have blisters, if second most layer is involved it is called second degree burn there will be blisters along with redness and swelling. Do not break blisters and pour lot of cool water over it. If third layer is involved than it's called as third degree burn and there is no blister , no pain no swelling, only charred skin and exposed fatty layer will be visible.
If there is third degree burn than immediately activate EMS and transfer the patient to the nearby health facility. For any chemical burn pour the water over it and immediately shift the victim to shower area to wash the clothes from any chemical. Do not touch the victim with bare hands always use gloves. For any chemical spillage in eye use the eye cup to wash the chemical or simply put your eyes beneath the tap and open water slowly to remove it.
You can use SILVER SULPHADIAZINE CREAM and XYLOCAINE cream in equal quantity and apply on the injured part this will have immediate relief.
If burn is severe and involve greater are immediately call the ambulance before starting CPR or first aid. Immediately shift the casualty to hospital.