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it has been a month already.
it should have healed up by now.
you really should just be using an antibiotic cream like a neosporin cream on the wound
and then putting on a tight bandaid on the finger.
and eating extra protein and vitamin C to help with wound healing.
but you really should see a doctor if your finger hasn't healed in a month.
the area could be infected and you might need a course of antibiotics to help the area heal.