This is a Beyond Beauty product which means it has been sourced, tried and tested and finally declared one of the most new and innovative heroes out there. OPI's Nail Envy is a formaldehyde-free formula with concentrated calcium that strengthens and thickens. It protects nails against peeling with Vitamin E and Kukui Nut Oil and soothes sensitive nails with aloe vera.£14.67 per 10.00ml