What would be the best suggestion: skin lightening or laser scar removal, or am I stuck with this scar forever?

I am african american and i have a 2.5 in. long and 2in w third degree burn on my left breast, it looks like an birth mark and i hate it,i am fairly light brown-skin.is skin lightening the way to go to fade it?? the was caused when i spilled hot tea from a thermus onto my chin and my chest. my chin has healed well,but i still have the scar on my chest what should i do?!

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