What can I do to clear my lips up from Retin-A burn? (Photo)

Hoping that you can please help me with any ideas on how I can take care of this issue. What can I do? Lips are split, red and very irritating. Doctor here gave me a prescription of Mupirocin Ointment 2%. Have been using since 5/12/16 and it has not helped. I have tried Vaseline and do put sunscreen on when I go outside. Skin peels off everyday also. Please help!

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