I wouldn't suggest a salt bath personally. I tried it a few times in the past and it didn't help... only succeeded in harming the fish more. An effective salt bath takes a lot more salt as well, more along the lines of 1/2 a cup of salt per gallon.
I would recommend getting a 5-10g q-tank, a good antifungal remedy (not mela or primafix), and adding 2tbsp of salt per 10g. Raise the temperature to 82F, and do daily 50% water changes, replacing salt and medication as needed.
You can also try the betadine method. This involved getting betadine (find in first aid section of the grocery store), soaking a q-tip in it, net the fish, then dabbing the affected areas on the fish with the betadined q-tip. Always avoid the gills and mouth.