Dark Knuckle treatment scrub buff away and helps to get rid of dark knuckles on the fingers and toes . 
To use ; Wet the affected area , apply and massage dark knuckle scrub gently  , leave for few minutes before washing off . 
Followed by zipp treatment soap to wash the affected area , dark knuckle treatment cream and treatment oil . 
Use this scrub once a day on affected area . 
Use day or night .