The famous Mavala Scientifique nail hardner uses a special formula to harden the nail plate by bonding its three layers together. By quickly hardening the nail it restores soft, flaking or splitting nails to their normal and strong states.
It uses a penetrating aqueous solution that is neither a base nor a nail polish. Since the tip of the nail is the most fragile and most unprotected part it goes on and breaks easily. This is therefore the part of the nail to be strengthened.
In order to use it, remove polish or any oily film and clean nails thoroughly then brush to the free edge of the nails only. After that, leave it on for a minute to set.