The tip of the nail is the most fragile, most unprotected part and breaks easily. It frequently needs to be strengthened.  

Mavala was the first to produce a penetrating nail hardener that actually hardens nails immediately and helps prevent splitting of flaking.

Formulated in 1958, Maval Scientifque is absorbed into the nail tip to harden and strengthen it.

• remove polish or any oily film and clean nails thoroughly. Apply product with the felt tip sparingly to the free edge of the nails. Leave on for one minute to set. Apply twice a week at the most until your nails have become heatlhy and strong. Then two to three times per month if necessary.
• Precaution: Never apply under nail, on cuticles, or skin. If any product runs on to the skin, wipe it off with damped cotton pad.