Mavala MAVAPEN Nutritive Cuticle Oil 4.5ml - Its specific formula has been developed to give nails resistance. NAIL SHIELD forms a strong physical protection to protect nails from daily tasks and other damaging elements. Then, being protected from breaking, flaking, and impacts and with combined treatment (such as Mavala Scientifique and/or Nailactan) the nail can then correctly regenerate and strengthen itself.