L’Oreal Professionnel Dia Color Demi Permanent Gloss Color

L’Oréal Professionnel Dia Color is an alkaline, ammonia-free demi-permanent hair colour designed to reverse the effects of melanin loss for vibrant, glossy results. Available in 60ml tubes, it is particularly effective for refreshing hair colour, toning after lightening services, or providing subtle grey blending.
The portfolio includes 100% true-to-tone natural reflects. Formulated with up to 91% natural origin ingredients, and up to 70% grey coverage. It provides 3x more shine and enhances hair vibrancy. The texture is creamy for easy mixing, application, and rinsing.

• Up to 70% grey coverage. Up to 1.5 levels of lift. With Melanin Gap Filler Technology for up to 70% grey coverage.
• Up to 6 weeks of gloss color, 2x shine. Soft demarcation.
• Lifts up to 1 level with alkaline technology, with no ammonia.
• Adds reflect and dimension for all hair types and textures.
• Enables customizable results with a large intermixable palette of shades from lightest blondes to darkest browns in cool, neutral, and warm tones.
• Fast processing. 20 minutes.
• 50 Shades.

L’Oreal Professionnel Dia Color How to Use

For professional results, Dia Color must be mixed with a Dia Activateur Developer at a 1:1.5 mixing ratio (60g colour to 90ml developer). For best results, we recommend:

• 6-vol. Dia Activateur Developer for soft tone on tone colour deposit
• 9-vol. Dia Activateur Developer for standard tone on tone colour and maintenance
• 15-vol. Dia Activateur Developer for strong colour deposit and optimal grey blending. For up to 1 level of lift.

Processing Time: Typically 20 minutes on towel-dried or dry hair, depending on the desired intensity.

L’Oreal Professionnel Dia Color FAQs

What is Dia Color?

Dia Color is an ammonia-free, alkaline demi-permanent hair colour designed to deliver natural-looking, glossy colour results with enhanced shine and softness.

What makes Dia Color different from permanent hair colour?

Unlike permanent colour, Dia Color:

• Does not contain ammonia
• Provides tone-on-tone colour (not full lift)
• Fades gradually without harsh regrowth lines
• Is gentler on the hair fibre

It sits between semi-permanent and permanent colour.

Is Dia Color suitable for professional or home use?

Dia Color is exclusively designed for professional salon use and is best applied by trained hairdressers.

What type of hair is it suitable for?

Dia Color works on:

• Natural hair
• Previously coloured hair
• All hair types and textures

It’s ideal for clients wanting subtle, natural-looking colour enhancement.

How much grey hair can it cover?

Dia Color provides up to 70% grey coverage, ideal for blending rather than full opaque coverage.

How long does Dia Color last?

Results typically last up to 6 weeks, fading gradually and naturally over time.

Does it lighten hair?

Yes, Dia Color can lift up to 1 level, making it suitable for subtle lightening and tone adjustments.