Description
How to Use
Warnings
Warranty
Description

Demi-permanent dark blonde hair colour with intense red reflect, ammonia-free for gloss shine and vibrant colour

The L’Oréal Pro Dia Color Demi-Permanent Hair Colour 6.60 is a tone-on-tone, ammonia-free hair colour, designed for dark blonde bases with a warm, intense undertone. The shade 6.60 is positioned as a dark blonde with a pronounced red reflect, ideal for intensifying colour, enriching depth, and creating a more expressive finish without losing naturalness.

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 dark blonde with intense red reflect and visible gloss shine. Hair appears more luminous, with depth and a more vibrant finish from root to tip.

Lost melanin replenishment technology acts inside the hair fibre, replicating natural colour and filling chromatic irregularities. The result is continuous colour, with reflects true to the shade and no artificial effect. Suitable for revitalising dull hair, intensifying warm reflects, or evening out faded lengths.

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

With up to 92% naturally derived ingredients, this hair colour offers professional performance with a gentler approach. Suitable for colour maintenance, enriching reflects, and boosting shine in dark blonde hair.

Key Features

  • L’Oréal Professionnel demi-permanent hair colour
  • Shade 6.60 dark blonde with intense red reflect
  • Ammonia-free formula
  • Up to 70% grey hair coverage
  • Lasts up to 6 weeks
  • Up to 3 times more shine
  • Lost melanin replenishment technology
  • Intense and vibrant warm reflects
  • Lifts up to 1 level and darkens up to 4 levels
  • Up to 92% naturally derived ingredients
  • Creamy texture for easy application
  • Professional 60ml format

Frequently Asked Questions

Is L’Oréal Pro Dia Color Demi-Permanent Hair Colour 6.60 a warm shade?

Yes. Shade 6.60 has a warm undertone with an intense red reflect.

Is this shade suitable for intensifying hair colour?

Yes. It is ideal for enriching colour and creating a more vibrant effect on dark blonde bases.

Does L’Oréal Pro Dia Color 6.60 cover grey hair?

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


Shade samples are merely indicative, as they may vary depending on the computer screen used for viewing. Pluricosmética therefore disclaims any responsibility for potential 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.

Wear suitable disposable gloves. Do not use metallic 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 touch-up: Apply to the root 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 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 exposure time, emulsify carefully 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 the instructions.
Perform a preliminary allergy test 48 hours before applying any colourant. If no irritation occurs, proceed with the application.
Read the leaflet accompanying the product carefully.
This product is not intended for use on persons under the age of 16.
For professional use only.
Wear appropriate gloves. If the product comes into contact with eyes, rinse immediately and thoroughly with water.
Do not use to colour 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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