Mavala Nail Shield, 2 Count, Phase 1 & 2, Clear Nail Polish Top Coat, Nail Strengthener, Nail Growth & Nail Hardener Treatment, Nail Care and Repair for Brittle or Split Nails

The nail plate is composed of three layers. It is naturally the visible, outer layer that is particularly sensitive to outside elements and can very easily be damaged by too much sun, cold weather or detergents.United States of America