The semi-permanent base coat that extends the wear of Green Flash™ up to 12 days and strengthens nails under the color. The Green Flash™ Vitamin-Enriched Semi-Permanent Base Coat protects and strengthens the keratin layers that make up the nail plate, thanks to its exclusive patented KeraCare technology, combining hexanal, vitamin C, and vitamin E. The patented KeraCare technology contains a synergy of naturally powerful active ingredients: - Hexanal: hardens and deeply repairs nails - Vitamin C: strengthens nails for long-lasting resilience - Vitamin E: prevents aging and protects the nail Benefits The first semi-permanent base coat that enhances durability and strengthens nails under the color.