OPI GelColor Black Onyx Gel Nail Polish — Opaque Dark Black Crème, LED-Cure, Vegan 0.5 fl oz

OPI GelColor Black Onyx is a salon-grade, opaque dark-black gel polish that cures quickly under LED for glossy, chip-resistant nails.

Designed for professional results at the salon or for experienced at-home users, OPI GelColor Black Onyx delivers an intensely pigmented crème finish with long wear and mirror-like shine. Powered by Intelli-Gel Technology, the formula spreads smoothly and self-levels so a single coat can give even coverage; it cures fast under an OPI Star Light LED lamp for smudge-free results. The formula is vegan and HEMA-free, and removes with a standard gel soak-off method.

How long will one application of Black Onyx last?

When applied correctly over a cured base and sealed with a top coat, OPI GelColor Black Onyx offers salon-grade longevity. Many users see up to three weeks of wear without visible chipping when nails are prepped and cured per professional steps.

• Up to 3 weeks of chip-resistant wear with proper application
• Requires base coat, GelColor color, and top coat for best durability
• Cures in 30 seconds with OPI Star Light LED lamp for instant smudge protection

What makes this gel polish easy to apply?

OPI’s Intelli-Brush and self-leveling gel technology help the pigment glide on evenly, reducing streaks and visible brush marks. The opaque black pigment gives strong coverage, so fewer coats are often needed to achieve a true, deep-black finish.

• Rounded Intelli-Brush for controlled, even strokes
• Highly pigmented crème formula minimizes number of coats
• Self-leveling results in smoother surfaces ideal for nail art

How do I cure and remove Black Onyx safely?

Cure each GelColor layer using an LED lamp—OPI recommends the Star Light LED for a 30-second cure per coat. To remove, soak the cured gel in an approved acetone soak-off system until the gel softens, then gently remove without scraping or force.

• Cures 30 seconds per layer with OPI Star Light LED lamp
• Soak-off removal in about 15 minutes using acetone and wraps or clips
• Follow with gentle buffing and cuticle care after removal

Is this polish suitable for sensitive or vegan-friendly routines?

OPI GelColor Black Onyx is formulated without animal-derived ingredients and is labeled vegan; it is also HEMA-free. While that reduces certain sensitivities, anyone with specific allergies should review ingredient lists and consult a professional nail technician if unsure.

• Vegan formula—no animal-derived ingredients or by-products
• HEMA-free composition for those avoiding that ingredient
• Recommended to patch-test if you have known product sensitivities

Who is this for: OPI GelColor Black Onyx suits nail professionals and experienced DIYers seeking a deep, true-black gel polish that cures fast and resists chips. It’s ideal for clients who want a high-pigment crème finish, quick LED curing, and a vegan, HEMA-free option. If you prioritize salon durability, mirror-like shine, and straightforward gel removal, Black Onyx is a reliable classic black choice.

Ingredients

Ingredients (Black Onyx) : Polyurethane-57, Benzyl Methacrylate, PEG-9 Dimethacrylate, Ethyl Trimethylbenzoyl Phenylphosphinate, Trimethylolpropane Trimethacrylate, Isobornyl Methacrylate, Silica, Bis-Trimethylbenzoyl Phenylphosphine Oxide, BHT, p-Hydroxyanisole, Hydroquinone, [May Contain/Peut Contenir/+/-: Iron Oxides (CI 77499)].