OPI Nail Lacquer Black Onyx is a premium 15 mL nail polish that delivers quality color and fast drying wear, perfect for weekly manicure updates. This iconic shade is the little black dress of nail polish colors, a versatile essential for any nail art collection and every mood.
What you get with this formula goes beyond color. It provides up to 7 days of wear in a fast drying formula, so you can switch up looks without worrying about frequent chipping. Proper prep helps adhesion and longevity: start by preparing your natural nails, apply one coat of OPI Natural Nail Base Coat, then shake the polish shade to mix the pigment and avoid streaks. Two thin coats on each nail, capping the free edge, and finish with OPI Top Coat to seal the color and extend wear.
Key Benefits
- Classic black shade that pairs with any manicure design.
- Fast drying formula for quick daily routines.
- Up to 7 days of wear with proper application.
- Smooth coverage by applying two thin coats and capping the free edge.
- Long-lasting protection when topped with a top coat to prevent chipping.
Ingredients & Why They Matter
- Ethyl Acetate and Butyl Acetate — solvents that help the color apply smoothly and dry quickly for a durable finish.
- Nitrocellulose — film-forming polymer that builds a hard, long-wearing layer on the nail.
- Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer — binder that helps color adhesion and flexes with nail movement to reduce cracking.
- Tribenzoin and Stearalkonium Bentonite — smoothing agents that improve texture and glide during application.
- Isopropyl Alcohol — fast-evaporating solvent that aids quick drying.
- Iron Oxides (CI 77499) — provides the rich black pigment in the shade.
- Citric Acid — helps maintain formula stability and pH balance for skin safety.
- Diacetone Alcohol and Dimethicone — contribute to polish consistency and a protective feel on the nail.
Usage Tips & Who It’s For
- Shake before use to mix pigment and avoid streaks.
- Apply two thin coats for rich, even color and cap the free edge to help prevent chipping.
- Finish with a Top Coat to extend wear and enhance shine.
- Best for anyone who enjoys updating manicures weekly or who wants a timeless, versatile black shade for nail art.
Store in a cool, dry place away from direct sunlight. If you experience irritation, discontinue use and consult a professional. Follow the included product instructions for application specifics.














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