O.P.I. Nature Strong in Onyx Skies is a naturally-derived nail polish that combines long-lasting wear with eco-conscious formulation. This 15ml bottle features a deep, sophisticated black shade perfect for creating elegant manicures. Key features: • Natural origin ingredients • Long-lasting formula • Deep black shade (Onyx Skies) • 15ml standard size bottle • Professional salon quality • Vegan-friendly formula • Elegant packaging design Part of O.P.I.'s Nature Strong collection, this polish represents the brand's commitment to combining performance with natural ingredients. The formula delivers rich color payoff while being gentler on nails. The shade Onyx Skies (NAT 029) offers a classic black that can be worn year-round for both casual and formal occasions. For best results, apply two thin coats and finish with a compatible top coat.