Well-groomed and strengthened nails? No problem thanks to the Express Manicure Hardening Treatment Color nail hardener! The special feature: this nail polish combines a hardener and color in one. The diamond formula strengthens brittle nails and protects them long-term from chipping and breaking. The delicate shimmer in soft pastel pink adds classic elegance to your nails. Express Manicure Hardening Treatment Color top coat: for well-groomed, healthy-looking nails in a timelessly elegant style!.