Suggest Remedy For Dry Blisters On Skin

I have a second degree splash burn 5 cm wide 3 cm long. The blister broke after the splash when I rolled back my sleeve, and I was told by the derm to put triple antibiotic ointment and keep it covered. It has been 3 weeks and the wound stills seems very moist and is a bright redish pink. Would it help if I let the wound air out so it will dry or is better to keep the wound moist while it heals..