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L'Oreal Dialight

Semi Permanent Hair Colour

L’Oréal Dia Light gives professionals the confidence to refresh, tone and enhance hair colour with incredible shine, while respecting the hair fibre. Ideal for colour-sensitive or previously coloured hair, Dia Light delivers ammonia-free, true-to-tone results with a gentle acidic formula and fast processing time. Loved by salon stylists across the UK, this demi-permanent range offers exceptional versatility from soft pastel toning to deep glossy finishes.

With a wide variety of shades, including Ash, Natural, Mocha, Copper and Red reflects, L’Oréal Dia Light makes it easy to personalise every colour service. It is the perfect choice for refreshing lengths, neutralising unwanted warmth or boosting shine without creating permanent commitment.
Powered by advanced conditioning technology, Dia Light helps smooth and nourish the cuticle during processing. Many toners can leave hair feeling dull or dry. Dia Light enhances softness and hydration, leaving hair looking healthier, shinier and more luminous after every service.

Shop CM Hair and Beauty Supplies for your favourite professional colour brands. Create beautiful salon results with our full range of demi-permanent hair colour products at trade prices. We stock everything you need for colouring services, including shade charts, developers, hair foils, bowls, brushes and more

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  2. L'Oreal Professionnel DIALIGHT 50ml
    L'Oreal Professionnel DIALIGHT 50ml
    Unit Price: £8.68 Regular Price £10.85
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About L'Oreal Dia Light and FAQ's

What is L’Oréal Dia Light?

 L’Oréal Dia Light is a professional demi-permanent hair colour designed to tone, refresh and enhance colour-treated or sensitive hair. It provides high shine and conditioning with no ammonia.

Who is Dia Light best for?

Dia Light is ideal for clients with previously coloured, sensitised or dry hair. It is perfect for refreshing faded lengths, neutralising warmth or adding subtle or glossy colour without long-term commitment.

How long does Dia Light last?

 Results usually last up to 6 weeks, depending on hair condition, shade depth and aftercare products used.

Does Dia Light provide grey coverage?

Dia Light is not designed for full grey coverage. It can softly blend up to about 30 percent grey for a natural result. For full coverage, Majirel is the better option.

How long does it take to process?

 Processing times vary by shade and desired result, but typically range from 5 to 20 minutes.

Is Dia Light damaging to hair?

 No. Dia Light is formulated with an acidic, ammonia-free technology that helps condition and smooth the hair fibre, leaving it soft and shiny.

Can Dia Light lighten natural hair?

 No. Dia Light cannot lighten the hair because it does not contain ammonia. It is designed for toning, darkening or enhancing existing colour.

Do I need to use a developer with Dia Light?

 Yes. Dia Light must be mixed with the dedicated Dia Activateur developer for the best results and shine.

Can I use Dia Light on bleached or highlighted hair?

 Yes. Dia Light is a popular choice for toning pre-lightened hair, helping to correct brassiness and deliver customised shade results.

How do I know if the Dia Light range is right for my salon?

If you’re unsure whether Dia Light is the perfect match for your salon, take a look at our in-depth Professional Buyer’s Guide to L’Oréal Dia Light — created especially for UK hair professionals.

Explore the complete L’Oréal Professionnel Colour portfolio to find the ideal solution for every client’s hair type, tone, and service.

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