Is this hyperpigmentation permanent? Post chemical peel.

Hello. Last July I was using tea tree oil on my face and I noticed it removed the smile lines that my makeup always sunk into so I continued using it more in that area. Eventually the skin in that area flaked off then a week later it was BLACK. I recently got a chemical peel and it seems the spots got darker. I’m using tretinoin for the hyperpigmentation which is kind of helping but I’m just scared and annoyed at myself that this may be permanent.