The tip of the nail is the most fragile, exposed part that breaks easily. Therefore, it is logically this part that we must fortify. By giving the nail a quick hardening, Mavala Scientifique allows split, soft and therefore brittle nails to regain their normal appearance, strength and shine. It's formula hardens the horny plate by sealing together the three layers that make up the plate. Penetrating water-based solution that is neither a base nor a varnish.