Experience stronger, healthier nails with Golden Rose Nail Expert Black Diamond Hardener. Featuring an advanced Black Diamond formula, this premium nail treatment helps reinforce, protect, and nourish your nails, reducing breakage and promoting growth. Its clear finish is suitable for all nail colors and types, making it perfect for adding durability and shine to your manicure routine. Available in a convenient 11ml bottle, it’s the ultimate solution for resilient, beautiful nails.