Penetrating nail hardener the tip of the nail is the most fragile most unprotected part and breaks easily this is therefore the part of the nail to be strengthened by instantly penetrating and quickly hardening the nail mavala scientifique allows soft flaking or splitting nails to become healthy and strong its formula hardens the nail plate so that the nail can restore its normal growth how to use remove polish or any oily film and clean nails thoroughly brush on to the free edge of the n