Daby Nail Hardener has a unique formaldehyde-free and toluene-free formula that protects and hardens natural nails while adding long-lasting shine to your manicure. Strengthens weak, soft and peeling nails, while its super strong formula will also help your nail polish from chipping. Triple strength polymers, formulated with protein and calcium, form a protective shield to increase nail thickness for maximum reinforcement. Achieve strong, beautiful nails today!