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Black Hair Dye | Permanent Hair Colour with Built-In Plex Technology | Smart Beauty

Sale price£12.45

Product Benefits:
  • Rich, natural-looking pure black colour
  • 100% Grey Coverage
  • Enriched with Smart Plex to help reduce breakage
  • Long-lasting permanent hair colour
  • Professional salon-quality results at home
  • Vegan & Cruelty Free
  • Made in Britain using premium European ingredients
  • Non-drip cream formula for easy application
  • Suitable for all hair types, including chemically treated, Afro and Asian hair

Rich, Long-Lasting Black Hair Colour with 100% Grey Coverage

Looking for a black hair dye that delivers rich, long-lasting colour without leaving your hair feeling dry or damaged?

Smart Beauty Pure Black Hair Dye has been carefully developed to give you salon-quality results at home. Our advanced permanent formula is enriched with Plex Technology built directly into the colour cream, helping to support and protect your hair while it colours.

Whether you're covering grey hair, refreshing faded colour or transforming your look completely, you'll enjoy beautifully rich black hair with exceptional shine, softness and confidence.

Because beautiful colour should never come at the expense of healthy-looking hair.

Black Hair Dye with Built-In Plex Technology

Most permanent hair colours focus only on colour.

Smart Beauty goes one step further.

Our unique formula contains Plex Technology blended directly into the permanent colour cream, so every strand is cared for throughout the colouring process.

As your colour develops, the Plex-enriched formula helps support the hair's internal structure while the rich pigments penetrate deeply into the hair.

The result is beautifully vibrant colour with hair that feels softer, smoother and healthier after colouring.

There's no separate Plex treatment to apply—everything happens in one simple colouring step.

Intense Black Hair Colour That Lasts

Our permanent black hair dye delivers deep, rich colour that stays vibrant wash after wash.

The highly pigmented formula provides excellent colour saturation for a natural-looking black finish with brilliant shine.

Perfect whether you're:

  • Covering grey hair
  • Refreshing faded black hair
  • Returning to your natural shade
  • Colouring your hair for the first time
  • Maintaining your signature black look

You'll enjoy professional-looking results without the salon appointment.

If your hair is longer than shoulder length or particularly thick, we recommend using two packs to ensure complete coverage.

100% Grey Hair Coverage

Grey hair can be stubborn.

That's why Smart Beauty Pure Black Hair Dye has been formulated to provide reliable, even coverage from root to tip.

The permanent colour penetrates deeply into every strand to create rich, consistent colour that blends naturally with your hair.

No patchiness.

No uneven roots.

Just beautiful, confident colour.

What's Inside the Box?

Each Smart Beauty Black Hair Dye Kit contains everything you need to achieve beautiful results at home.

  • Permanent Colour Cream enriched with Smart Plex
  • Developer Lotion
  • Protective Gloves
  • Easy Step-by-Step Instructions

How to Use

  1. Carry out a skin allergy test 48 hours before colouring.
    2. Mix the Permanent Colour Cream with the Developer Lotion following the enclosed instructions.
    3. Apply evenly from roots to ends.
    4. Leave to develop for 30–45 minutes.
    5. Rinse thoroughly and finish with the included Smart Plex Nourishing Conditioner.

Suitable for All Hair Types

Our permanent black hair dye is suitable for:

  • Straight hair
  • Wavy hair
  • Curly hair
  • Coily hair
  • Thick hair
  • Fine hair
  • Natural hair
  • Previously coloured hair*

If your hair is longer than shoulder length or particularly thick, we recommend using two packs to ensure full coverage.

*Always perform a strand test before colouring previously treated hair.


Frequently Asked Questions

Does this black hair dye cover grey hair?

Yes. Smart Beauty Pure Black Hair Dye provides 100% grey coverage for long-lasting, even colour.

How does the Plex Technology work?

Our Plex Technology is built directly into the permanent colour cream. As the colour develops, the Plex-enriched formula helps support the hair's internal structure during colouring, helping to reduce breakage while delivering rich, permanent colour.

Is this permanent or semi-permanent?

This is a permanent black hair dye designed for long-lasting colour and complete grey coverage.

Will it leave my hair feeling dry?

Our formula has been developed with built-in Plex Technology to help support the hair during colouring, leaving it feeling soft, smooth and healthy-looking.

Do I need two boxes?

If your hair is longer than shoulder length, particularly thick or you're colouring from root to tip, we recommend using two boxes for complete coverage.

Why Choose Smart Beauty?

At Smart Beauty, we believe colouring your hair should feel exciting—not intimidating.

That's why every formula combines rich, professional-quality colour with hair-loving technology that helps care for your hair as it colours.

Whether you're touching up roots, covering grey hair or embracing a bold new look, our black hair dye makes it easy to achieve beautiful, glossy results from the comfort of home.

Beautiful colour. Healthier-looking hair. Colour with confidence.

Smiling woman with glossy pure black hair coloured using Smart Beauty Pure Black Hair Dye with Plex Care – vegan, cruelty-free permanent hair colour made in the UK for rich, salon-quality shine.
Black Hair Dye | Permanent Hair Colour with Built-In Plex Technology | Smart Beauty Sale price£12.45