Description
How to Use
Ingredients
Warnings
Warranty
Description

Demi-permanent light blonde hair colour with a balanced golden reflect, ammonia-free for gloss shine and natural colour

The L’Oréal Pro Dia Color Demi-permanent Hair Colour 8.31 is an ammonia-free tone-on-tone colouration, designed for light blonde bases with a balanced warmth and control. The shade 8.31 is a light blonde with a golden reflect softened by a cool nuance, ideal for maintaining luminosity without excessive warmth.

When applied to dry hair, the creamy texture uniformly envelops the hair fibre, allowing for precise and controlled distribution. The colour develops progressively, revealing a balanced light blonde with visible gloss shine and a more stable chromatic reading. Hair appears more uniform, with visual lightness and a polished finish from root to tip.

The lost melanin replacement technology acts within the hair fibre, replicating natural colour and filling chromatic irregularities. The result is a continuous colour, with reflects true to the shade and no artificial contrast. Suitable for softening excessive warm reflects, evening out faded lengths, or revitalising dull hair.

Lasting up to 6 weeks, the colour remains stable and luminous. Coverage can reach up to 70% of white hair, ensuring a natural and integrated result. The ammonia-free formula guarantees greater comfort during the service and respect for the hair fibre.

With up to 92% natural origin ingredients, this colouration offers professional performance with a gentler approach. Suitable for colour maintenance, reflect correction, and shine enhancement on light blonde hair.

Main Features

  • L’Oréal Professionnel Demi-permanent Colouration
  • Shade 8.31 light blonde with balanced golden reflect
  • Ammonia-free formula
  • Up to 70% white hair coverage
  • Lasts up to 6 weeks
  • Up to 3 times more shine
  • Lost melanin replacement technology
  • Balance between luminosity and reflect control
  • Lifts up to 1 level and darkens up to 4 levels
  • Up to 92% natural origin ingredients
  • Creamy texture for easy application
  • Professional 60ml format

    Frequently Asked Questions

    Is L’Oréal Pro Dia Color Demi-permanent Hair Colour 8.31 a warm shade?

    It is a balanced shade, with a golden base softened by a cool nuance.

    Does this shade help avoid overly warm reflects?

    Yes. It helps maintain luminosity without excessive warmth in the colour.

    Does L’Oréal Pro Dia Color 8.31 cover white hair?

    Yes. It can cover up to 70% of white hair, ensuring a uniform and natural finish.


    The shade samples are merely indicative, as they may vary depending on the computer screen used for viewing. Therefore, Pluricosmética declines any responsibility for any colour variations that may arise.

    How to Use

    You can use any Diactivateur developer with Dia colour (mixing ratio: 1 + 1.5). For best results, we recommend: Diactivateur 6 vol. for a soft colour deposit; Diactivateur 9 vol. for a medium colour deposit; Diactivateur 15 vol. for an intense colour deposit.

    Use suitable disposable gloves. Do not use metal tools (bowl, comb...). Use only the recommended Diactivateur.
    In a bowl, applicator bottle, or shaker, mix 60 ml (1 tube) of Dia Color cream and add 90 ml of the chosen Diactivateur developer. Apply to dry hair.

    First application: The 20-minute development time begins at the end of the application.
    Root retouch: Apply to the root area, begin the 20-minute development time, then immediately distribute through the rest of the hair to revitalise the colour for a deeper and/or darker result.
    Distribute through the rest of the hair after 10 min, if lengths and ends are moderately faded.
    Emulsify during the last 5 min, if the colour is slightly faded.
    At the end of the development time, emulsify carefully for a few minutes. Rinse hair thoroughly until the water runs clear. Wash with the Metal Detox shampoo.

    Ingredients
    AQUA / WATER / EAU • CETEARYL ALCOHOL • ETHANOLAMINE • GLYCERIN • PROPANEDIOL • BUTYROSPERMUM PARKII BUTTER / SHEA BUTTER • OLEIC ACID • OLEYL ALCOHOL • COCO-GLUCOSIDE • TOLUENE-2,5-DIAMINE • SODIUM METABISULFITE • PARFUM / FRAGRANCE • m-AMINOPHENOL • HYDROXYBENZOMORPHOLINE • ASCORBIC ACID • TETRASODIUM GLUTAMATE DIACETATE • N,N-BIS(2-HYDROXYETHYL)-p-PHENYLENEDIAMINE SULFATE • XANTHAN GUM • HYDROXYETHYL-3,4-METHYLENEDIOXYANILINE HCL • SODIUM HYALURONATE • THIOGLYCERIN • CITRIC ACID
    Warnings
    Hair colourants can cause severe allergic reactions.
    Read and follow the instructions.
    Perform a preliminary allergy test 48 hours before applying any hair colourant. If no irritation occurs, proceed with the application.
    Read the leaflet accompanying the product carefully.
    This product must not be used on persons under 16 years of age.
    For professional use only.
    Wear appropriate gloves. If the product comes into contact with eyes, rinse immediately and thoroughly with water.
    Do not use for colouring eyelashes or eyebrows.
    Warranty
    For more information about the warranty of products available on pluricosmetica.com, please refer to point 11 - "Product Warranty" on this page
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