M27 - Ingrown hair on penis removed turned into scarring and left a red lump for years - Treatable?

!Bit of history several years ago I had an ingrown hair in the same spot that got big/ purple which I stupidly popped and extracted the hair myself. Since then the hair struggles to poke through the scaring but eventually shows to be plucked. But the lump remains and is noticeable. Is this treatable, what is it? (Not STD, been tested)

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