Nails inc Nailkale Superfood Base Coat. 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. Nailkale superfood base coat is a powerful treatment that promises five nail benefits; 1. Keratin hardening 2. Keratin activation to stimulate nail growth 3. Hydration and anti-breakage and anti-splitting protection 4. Deep nourishment 5. Healthy looking, brighter nails with a high gloss finish.