keep it nice and moist. dont pick at it, like a scab,if you pull it off too early it will bleed and you will loose the colour/ink. it should just peel off when its ready.

Mine take a good 2 weeks to heal completely, and even then remain insanely itchy for months (on and off) to years.

DH on the other hand are healed the next day...b***. just luck i guess =P