Multi active Hardener nail base for immediate extra protection. Specially formulated to harden the base of the nail and stop brittleness, forming a hard and shiny shield that protects against water penetration. Nails are noticeably rebuilt to a stronger, thicker, smoother, harder yet flexible state that resists breaking, splitting and peeling after 4 weeks of regular use. Helps reduce staining and yellowing of nails and improves wear when used under colored nail polish. It gives the nails a smooth, shiny and neat finish. How to use: Apply to a clean and bare nail as a base coat: a coat of Multi Active Hardener under the colored lacquer will protect your nails and increase wear. Use once a week regularly to promote strong, healthy nail growth after 4 weeks of regular use