Will this post inflammatory hyperpigmentation be permanent? What can I do to treat this? (Photo)

I had an esthetician recommend a peel for my back from acne scars. She did a Jessner peel followed by a 30% Tca peel. Within seconds I told her to take it off my skin because I could not withstand the burn any longer. She also said 30% was no strong for my body. The next day I knew something wasn’t right because the rawness and discomfort did not seem normal. Cut forward to a month later and I’m dealing with severe pih. What can I do to treat this? Will it go away?