Cold spray sprayed on left chest. Go?.

Left chest injury happen 3 weeks ago, then I sprayed cold spray on cold spray, then consulted video call for doctors, diagnosis soft tissue injury takes time to heal, then black skin peeled off, I was applying Almond oil, after that raw white & pink skin visible with tiny blisters & started itching so I started applying mupirocin 2% for 5 days , nothing happened, then I applied deep moistureizer lotion, no improvement, took certrizine 10 mg , 3 days mild relief from itchy, now pls guide which is proper medication for this skin blister to go?. Pain is reduced to70% , I have following medication with me nowhere, 1) mupirocin 2% 2) m zeel 3) zinc oxide 4) sofrazeel 6) poviodine ointment 7) ketz b 8) plain petroleum jelly vaseline It's not getting dry & not healing 2 weeks already passed same whitish pink skin