Nano strenghtener Emergency therapy for damaged nails. Product forms a ceramic nano-shield to instantly improve nail condition and make nail harder in 2 weeks.Use: Apply in one coat and allow to dry for 2-3 minutes. Then apply your favorite nail polish. If you only want to use the nail strengthener for a natural effect, apply it in two coats. To faster achieve the desired result, coating should be renewed every 2-3 days.