How long it takes for a finger burn to improve depends on the severity of the burn, and one cannot generalize. If the burn affects only the epidermal layer, recovery or complete healing generally takes about a week. This is because skin metabolism, which takes about 5 to 7 days to renew, especially at burned areas such as on the face or fingers, can take longer to heal.

Moreover, if the burn is deeper, reaching below the dermal layer, the recovery time depends on how deep the burn is. It might take 2 weeks or even up to a month for complete recovery. Therefore, the duration needed for a burn to heal depends on the severity of the burn.