OPI Nail Lacquer Black Onyx — Crème-Finish Black Nail Polish, Fast-Drying & Chip-Resistant, 0.5 fl oz

OPI Black Onyx Nail Lacquer is a deep, crème-finish black polish engineered for even coverage, fast drying, and up to seven days of chip resistance when used with OPI base and top coats.

Classic and versatile, this signature OPI shade is designed to be your go-to black polish for solos or nail art accents. The salon-grade formula delivers rich color in two coats, a pro-style brush for smooth application, and a finish that balances high shine with quick drying. Made in the USA and part of OPI’s extensive color library, Black Onyx works well for weekly mani updates or when you need a reliable, sophisticated black.

How opaque is Black Onyx and how many coats do I need?

Black Onyx is formulated as an opaque crème pigment, so you’ll typically reach full coverage in two coats. The formula spreads evenly and resists streaking thanks to the wide, pro-style brush, reducing the need for extra layers.

• Apply 1 thin base coat for adhesion and protection.
• One medium coat covers most nails; two coats recommended for uniform opacity.
• Finish with an OPI top coat for extended wear and increased shine.

How long will the manicure last and is it chip resistant?

When used as a three-step system—OPI Natural Base Coat, two coats of color, and OPI Top Coat—Black Onyx can provide up to seven days of chip-resistant wear under normal conditions. Individual wear time varies with activity and nail prep, but the formula is designed for weekly polish changes.

• Three-step system maximizes durability up to 7 days.
• Fast-dry properties reduce smudging during the drying window.
• Use RapiDry Top Coat to speed drying if needed.

What application tips improve finish and longevity?

Proper prep and application make a big difference: clean nails, a thin base coat, and thin color layers dry better and last longer. The pro-wide brush helps achieve a streak-free finish and covers the nail in fewer strokes.

• Remove oils with a gentle polish remover before starting.
• Use thin, even strokes and allow each coat to dry briefly before the next.
• Seal free edges with top coat to reduce tip wear.

Is this polish cruelty-free and what shades does OPI offer?

OPI Nail Lacquer is vegan with no animal-derived ingredients or by-products in the formula. OPI’s range spans over 200 shades—from sheer neutrals to bold brights—so Black Onyx sits alongside many options for mixing, matching, and layering.

• Vegan formula without animal-derived ingredients.
• Part of OPI’s library of 200+ trend-setting shades.
• Pairs easily with gels, top coats, and nail art tools.

Who this is for: Black Onyx is ideal for anyone who wants a dependable, high-pigment black polish—salon professionals seeking a classic shade, at-home users who prefer quick, even application, or nail artists needing a true black for contrast and detail. If you change colors weekly or want a staple black that plays well with base and top coats, this OPI lacquer is a practical, polished choice.

Ingredients

INGREDIENTS: Ethyl Acetate, Butyl Acetate, Nitrocellulose, Tosylamide/Formaldehyde Resin, Acetyl Tributyl Citrate, Isopropyl Alcohol, Styrene/Acrylates Copolymer, Camphor, Adipic Acid/Isophthalic Acid/Neopentyl Glycol/Trimethylol Propane Copolymer, Diacetone Alcohol, Benzophenone-1, Dimethicone, CI 77499 (Iron Oxides).