Nails inc Nailkale Montpelier Walk. Nails inc introduce Nailkale, the first nail care range formulated with anti-oxidant kale, is the ultimate treatment for stronger, healthier looking nails. The range features Nails inc s patented Regenerating Complex a two-fold Aldehyde, Zinc and Calcium blend that boosts the production of keratin for harder, stronger and healthier nails. Featuring a patented plasticizer to ensure long lasting wear, amazing chip resistance and a high shine finish. Montpelier Walk is a toffee nude trend shade in Nailkale formulation.