Strengthen and fortify fragile nails and prevent nail breakage with Horse Power Nail Rescue Basecoat, butter LONDON's ultimate renewing treatment. It's infused with horsetail extract, biotin, vitamin B and calcium to help rescue damaged nails and protect against future damage while leaving nails restored, revitalized and prepped for an impeccable manicure.How to use: Apply one coat to clean, dry nails. Let dry completely. Follow with your favorite nail lacquer. To finish the look, apply a top coat. Style Name:Butter London 'Horse Power' Nail Rescue Basecoat. Style Number: 5109121. Available in stores.