hair mask

 
This might have been the original infomercial for the stuff, starring Ron Popeil. I remember watching him on late night selling everything from potato guns to turkey roasters.



The same principle can be used if you happen to have a hole in your sock - eg: Black socks - just get a black marker (or campfire soot, or shoe polish) and fill in the skin below the hole. It's an old hobo trick...