Description
How to Use
Warnings
Warranty
Description

Light blonde demi-permanent hair colour with a golden copper reflection, ammonia-free for gloss shine and luminous colour

The L’Oréal Pro Dia Color Demipermanent Colour 8.43 is a tone-on-tone, ammonia-free hair colour, designed for light blonde bases with a warm and luminous direction. The shade 8.43 is a light blonde with a golden copper reflection, ideal for warming the colour, intensifying luminosity, and creating a more vibrant yet natural-looking finish.

When applied to dry hair, the creamy texture evenly coats the hair fibre, allowing for precise and controlled distribution. The colour develops progressively, revealing a light blonde with a warm reflection and visible gloss shine. The hair appears more luminous, with added depth and a cared-for finish from root to tip.

The lost melanin replenishment technology works within the hair fibre, replicating natural colour and filling in chromatic irregularities. The result is continuous colour, with reflections true to the shade and no artificial effect. It is suitable for revitalising dull hair, enriching warm reflections, or evening out faded lengths.

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

With up to 92% naturally derived ingredients, this hair colour offers professional performance with a gentler approach. It is suitable for colour maintenance, enriching reflections, and boosting shine in light blonde hair.

Key Features

  • L’Oréal Professionnel demi-permanent hair colour
  • Shade 8.43 light blonde with a golden copper reflection
  • Ammonia-free formula
  • Up to 70% grey hair coverage
  • Lasts up to 6 weeks
  • Up to 3 times more shine
  • Lost melanin replenishment technology
  • Luminous warm reflections
  • Lightens up to 1 tone and darkens up to 4 tones
  • Up to 92% naturally derived ingredients
  • Creamy texture for easy application
  • Professional 60ml format

Frequently Asked Questions

Is L’Oréal Pro Dia Color Demipermanent Colour 8.43 a warm shade?

Yes. Shade 8.43 has a warm direction with a golden copper reflection.

Is this shade suitable for adding more luminosity to the hair?

Yes. It is ideal for enriching the colour and increasing luminosity on light blonde bases.

Does L’Oréal Pro Dia Color 8.43 cover grey hair?

Yes. It can cover up to 70% of grey hair, ensuring a natural and even result.


The shade samples are for indication purposes only, as they may vary depending on the computer screen used for viewing. Therefore, Pluricosmética disclaims any responsibility for any colour variations that may occur.

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 gentle colour deposit; Diactivateur 9 vol. for a medium colour deposit; Diactivateur 15 vol. for an intense colour deposit.

Use appropriate 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.
Regrowth touch-up: Apply to the regrowth area, start 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 minutes, if lengths and ends are moderately faded.
Emulsify during the last 5 minutes, if the colour is slightly faded.
At the end of the processing time, carefully emulsify for a few minutes. Rinse hair thoroughly until the water runs clear. Wash with Metal Detox shampoo.

Warnings
Hair colourants can cause severe allergic reactions.
Read and follow instructions.
Perform a preliminary allergy test 48 hours before applying any hair colour. 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 and 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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