Referring to my earlier comment, if at all possible wrapping is always best, but it is not always possible. Liberally applying ointment and keeping it fully covered with ointment is your next best option. If ointment is no longer covering wound, reapply. Liberally. You want to do all you can to alleviate discomfort and speed up healing. Adding vitamins or an electrolyte solution to the water helps with hydration as well, and it necessary for healing. I linked to several sources in my original comment, including a DIY recipe for an electrolyte solution.