New Dia light Demi Permanent Hyaluronic Acidic Gloss Color 

No Ammonia Gloss, tone & refresh color. Deep hydration. Instantly fights dryness, one of the first visible signs of damage.

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Description

Dia light Acidic Gloss Color is the breakthrough way to gloss, tone & refresh. Our first acidic demi-permanent hair color enriched with Hyaluronic acid that instantly hydrates during color and fights the first visible sign of damage, dryness.
Dia light neutralizes undertones after lightening, gently refreshes faded lengths after color and deposits shine to revive dull hair.
A unique, acidic pH technology exclusively for professional use.

Results & Benefits

Enriched with Hyaluronic Acid, the new Dia light deeply hydrates to increase hydration by 2X**, instantly.
Color is 82% glossier*, with results lasting up to 6 weeks*.
Hairs cortex integrity is preserved, and hair strengthened after bleach, with 3X less breakage***.
(Acidic in nature, Dia Light helps to balance hairs pH after lightening and seal the cuticle for visibly healthier looking hair color.
A new milky cream texture that feels more like a treatment than a color. So much so, 90% of hairdressers prefer the texture of the new Dia ight – a galenic of precision, especially vs liquid alternatives. What’s more, it’s versatile. You can use new Dia light to gloss, tone and refresh your clients color with infinite color possibility across a palette of 80 shades, paired with 3 different developer volumes

*: Instrumental test
**: Instrumental test on natural hair
***: Instrumental test on bleached hair

How to use

PREPARATION
Wear suitable disposable gloves.

  • Use exclusively with the recommended Diactivateurs 6 vol. (1.8%), 9 vol. (2.7%) or 15 vol. (4.5%)
  • Use only the indicated proportions outlined on both the carton and the tube
  • When a shaker (bottle) is used, open immediately after mixing to avoid the shaker (bottle) bursting and the product overflowing.

In a bowl or an applicator shaker (bottle) :

  • Mix 60 ml (1 tube) of Dia light coloration cream.
  • Then add 90 ml of Diactivateur 6 vol.(1.8%), 9 vol.(2.7%) or 15 vol.(4.5%), according to the result required. Quantities of product can be increased if more is required, provided that you always mix using a 1: 1.5 ratio.

APPLICATION AND RINSING.
On dry hair, apply the mixture, using a bottle or a brush.

  • Wear suitable disposable gloves.
  • Do not use metallic tools (bowl, comb…).
  • Rinse the hair thoroughly after the development time.
  • Development time: 20 min.
  • Emulsify gently, rinse thoroughly and shampoo with Metal Detox or Vitamino Color Spectrum.

Services Opportunities

With Dia light you can introduce the following services in salon:

Hyaluronic Glossing, Toning & Refreshing Services:
1. Hyaluronic Glossing: a global application to add shine and increase manageability atop of any old coloration service
2. Hyaluronic Toning: to neutralize unwanted undertones immediately after pre-lightening or a balayage
3. Hyaluronic Refreshing: to match reflect and revive faded color specifically on lengths and ends after a grown out permanent hair color service

French Blending™ Services:
1. First Blending: For clients experiencing their first greys.
Soft contrast, lowlights to add depth, blending grey clusters naturally.
2. Retouch Blending: To maintain a blended look over time.
Softens the grey bar, adds lighter and dimensional tones.
3. Total Blending: For clients wanting an overall, full-head blended effect.
A combination of balayage and color for a naturally diffused finish.

Ingredients & Safety Warning

For more information, please refer to our group website: Inside our products.

This ingredients list is subject to change and depends on country location selling. Consumers should refer to the product packaging for the most relevant ingredients list. In case of problem, please contact the consumer care center.

All the pro tips to apply L’Oréal Professionnel services in salon.

Discover the pro tips to apply the Hyaluronic Refreshing service and French Blending™ services from our Global Brand Contributors.

preview Youtube video xVYDK45fAFo Play the video How to apply the Hyaluronic Refreshing service.

How to apply the Hyaluronic Refreshing service.

To touch up dull faded mid-lengths and ends without oversensitizing the hair by Washington Nunnes.

preview Youtube video Nb4SAe3iQmc Play the video How to apply the First Blending service.

How to apply the First Blending service.

With Soft contrast, lowlights to add depth, blending grey clusters naturally, by Nancy Stripe.

preview Youtube video A3Gyw8nKq1M Play the video How to apply the Retouch Blending service.

How to apply the Retouch Blending service.

To soften the grey bar, add lighter and dimensional tones, by Jack Martin.

preview Youtube video lS-UpKMpS-Y Play the video How to apply the Total Blending service.

How to apply the Total Blending service.

A combination of balayage and color for a naturally diffused finish, by Jack Martin.

Frequently asked questions.

  • What is L’Oréal Professionnel Dia Light?

    Dia Light is a hyaluronic acidic demi-permanent hair color perfect to tone, refresh, and add shine. It’s ideal for enhancing color-treated or natural* hair while improving overall condition.

    *Glossing service only, using Dia Light Clear.

  • How long does Dia Light last?

    Dia Light typically lasts 4-6 weeks, depending on hair porosity, care routine, and the frequency of washing.

  • What are the benefits of using an acidic pH hair color?

    The acidic pH formula of Dia Light is designed to seal the hair cuticle, creating a glossy, polished finish while preserving cortex integrity.

  • Can Dia Light cover gray hair?

    Dia Light is not designed for gray coverage. If you require grey coverage, we invite you to discover Dia color. Our Alkaline demi-permanent color technology for natural looking grey coverage up to 70%.

  • Why is Dia Light unique vs other dermi-permanent colors?

    Not only does Dia Light instantly fight dryness thanks to Hyaluronic Acid, it is one of the only demi-permanent formulas on the market that pair with three developers enabling you to control the opacity of your color result. The higher the developer volume, the more opaque your result.

  • What is the benefit of Hyaluronic Acid in hair color?

    While the acidic pH of Dia Light works to seal the cuticle, Hyaluronic Acid simultaneously attracts and binds to water to instantly replenish lost moisture. The formula does this by enveloping the fiber in a hydrating film to lock in the color and hydration.

  • What makes the galenic of Dia Light unique?

    The new milky cream texture feels more like a treatment than a color. So much that 90% of hairdressers prefer the texture of the new Dialight – a galenic of precision, especially vs liquid alternatives.

  • Is Dia Light suitable for pre-lightened or bleached hair?

    Yes! Dia Light is perfect for pre-lightened or sensitized hair. It helps neutralize unwanted undertones, enhance faded pre-existing color, and restore shine.

  • How do I mix Dia Light?

    Mix Dia Light with the recommended L’Oréal Professionnel Diactivator in a 1:1.5 ratio. Use Diactivator 6 Vol for toning or refreshing and Diactivator 9/15 Vol for slightly more deposit and opacity.

  • Does Dia Light damage the hair?

    Dia Light is ammonia-free and designed to be gentle, making it ideal for fragile or sensitized hair. Now enriched with Hyaluronic acid, Dia light instantly fights one of the first visible signs of damage, dryness. Hair quality is visibly improved, instantly hydrated.

  • Can Dia Light add shine to dull hair?

    Absolutely! Dia Light’s acidic pH formula enhances shine and leaves hair with a smooth, glass-like finish.

  • Can Dia Light tone brassiness?

    Yes, Dia Light is excellent for neutralizing brassiness or unwanted warm tones in blonde or highlighted hair. It offers a wide range of shades to customize your tone.

  • Can I use Dia Light on virgin hair?

    Dia Light is perfect for use on pre-lighened or previously colord hair. Dia Light can enhance shine on natural (uncolored) hair by using Dia Light Clear.

  • How should I care for my hair after using Dia Light?

    We reccomend L’Oréal Professionnel Metal Detox or Vitamino Color Spectrum to maintain color vibrancy and shine.

  • Can I reapply Dia Light?

    Yes, Dia Light can be reapplied as needed to refresh color and shine.