Help with a burn....?

I was using air duster to clean my computer keyboard and the gas leaked onto my hand and burned it badly. There is one big blister and skin coming apart and it is extremely painful. Ibuprofen is not working to relieve the pain. Should I dress it like a normal 2nd degree burn with Bactine and bandage gauze? What about the oozing and 2nd layer of skin underneath the popped blister (the skin peeled right off with a band-aid)? Should I see a doctor? It is such a stupid injury but it is very painful and itchy? Please give advice.