Nailine Hardener is a formula composed of 5 Active Vitamins and 5 Plant Extracts. The vitamin complex (Vit. A, B5, C, E and F) provides hydration, high anti-oxidant power and activates the production of Keratin in the nails. The complex of 5 plant extracts (Aloe Vera, Lemon, Gingseng, Pomegranate and Grape) is nourishing, revitalizing and adds shine to nails. Contains Hexanal as a hardening agent, a powerful clinically tested hardener that improves nail health. With UV Filter: Prevents discoloration and yellowing. Instructions for use: External use.\ As a nail treatment: apply two layers twice a week.\ As a base for polish: apply one layer directly to the nail.