What can I do to lighten the dark mark left on my face after burned by ethyl alcohol? (Photo)

I carried away in picking a pimple, scrape it off & it formed a hole. I put ethyl alcohol and left it overnight.Next morning, the surrounding skin swelled, formed a scab and I peeled it off. It left a dark mark and it still there for 5 weeks. I used different methods to lighten the mark but it got worse. Will it leave a permanent mark? Any consultation might help!

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