I experienced major skin peeling from using the bleach accelerator that my dermatologist gave. How can I have my tan skin back?

I have morena complexion and whenever I am exposed to the sun, I get white spots on my cheeks. I went to the Derma and he gave me bleaching accelerator saying that the white spots were my actual skin color and the white spots are normal for morenas like me. I experienced major skin peeling which left much whiter spots than the white spots before. My skin got lighter from the rest of my body but the white spots are still visible and did not blend. How can I get my original skin complexion back?

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