L'Oréal Excellence HiColor H21 Black Onyx Permanent Hair Color for Dark Hair Only – 1.74 oz

L'Oréal Excellence HiColor H21 Black Onyx is a permanent crème color formulated specifically for dark bases – no pre-lightening needed. Part of the HiColor Blacks range, it delivers a deep, glossy blue-black that covers gray completely and stays true-to-tone without brassiness, while the Anti-Breakage Ceramide R complex conditions as it colors.

Why you'll love it

• Designed for dark hair only – rich blue-black results on natural level 1–4 bases
• Complete, even gray coverage with long-lasting permanent color
• No brassiness – true-to-tone black finish
• Anti-Breakage Ceramide R complex helps protect hair during processing
• Suitable for virgin hair and retouching previously colored hair

How to use

1. Skin-test 48 hours before use and wear gloves. Do not use metal bowls or tools.
2. Mix the full 1.74 oz tube with 2.5 oz of L'Oréal Oreor 30 Volume developer (20 Volume only for relaxed hair).
3. Apply to dry, unwashed hair. Virgin hair: lengths and ends first for 20 minutes, then roots for 10 more. Retouch: regrowth 20 minutes, then pull through 5–10 minutes.
4. Rinse until the water runs clear, shampoo and condition.

Key ingredients

• Permanent crème color – delivers deep, even black pigment with full gray coverage
• Anti-Breakage Ceramide R complex – reinforces the hair fiber while you color
• Blue-black tonal base – keeps the result cool and shine-rich, never brassy

Best for

Natural, relaxed and color-treated hair on dark bases that wants a deep, intense black with full gray coverage – ideal for root touch-ups and refreshing faded black hair.

FAQ

Do I need developer?
Yes. HiColor is sold as the color tube only – pair it with Oreor 30 Volume (20 Volume on relaxed hair).

Can I use it on relaxed hair?
Yes, but use 20 Volume developer only and wait at least two weeks after relaxing.

Is it the same as HiColor Reds?
No. This is the HiColor Blacks range – a deposit-focused black for dark hair, not a high-lift red.

1.74 oz tube (developer sold separately). Fast shipping across the US.