How to heal tretinoin cream chemical burn? (Photo)

I've been using tretinion cream 0.025% for a month and a half. It's done an amazing job clearing my skin. I stupidly used the tretinion then applied Neutrogena Rapid Tone Repair serum that's for acne hyper pigmentation. I applied it on my dark mark that was about the size of an eraser head. The next morning the spot where it was applied literally peeled off. How can I prevent scarring? Should I discontinue use of tretinoin in that area?

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