Please someone help me. Is this permanent damage? (Photo)

I recently I used a 14% glycolic acid on my face and neck for chemical exfoliation over the counter product and I forgot to use sunscreen. Now my face and neck is darker like a Hyperpigmentation issue. A big spot. Discoloration. I don't know what to do, is it permanent damage ? i made it worse it looks worse than the picture in live all around my neck where ever I applied the product and the places where the sun was exposed. please help me the pictures are not doing any justice.