Demi-permanent hair colour, medium blonde with mocha undertone, ammonia-free for gloss shine and sophisticated colour
L’Oréal Pro Dia Color Demipermanent Hair Colour 7.8 is an ammonia-free, tone-on-tone colour designed to work with medium blonde bases, offering a sophisticated and balanced result. Shade 7.8 is a medium blonde with a mocha undertone, ideal for refining colour, adding depth, and creating an elegant, natural-looking finish.
When applied to dry hair, the creamy texture uniformly coats the hair fibre, allowing for precise and controlled distribution. The colour develops progressively, revealing a medium blonde with a subtle mocha nuance and visible gloss shine. The hair appears more uniform, with visual lightness and a polished finish from root to tip.
The lost melanin replacement technology works within the hair fibre, replicating natural colour and filling in chromatic irregularities. The result is continuous colour, with tone-true reflections and no artificial effect. Suitable for revitalising dull hair, enriching natural colour, or evening out faded lengths.
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% naturally-derived ingredients, this hair colour offers professional performance with a gentler approach. Suitable for colour maintenance, enriching reflections, and boosting shine on medium blonde hair.
Key Features
- L’Oréal Professionnel demi-permanent hair colour
- Shade 7.8 medium blonde with mocha undertone
- Ammonia-free formula
- Up to 70% white hair coverage
- Lasts up to 6 weeks
- Up to 3 times more shine
- Lost melanin replacement technology
- Natural reflections with sophisticated nuance
- 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
How to Use
- Wear suitable disposable gloves.
- Do not use metallic tools.
- Use only the recommended Dia Activateur.
- Mix 60 ml of Dia Color with 90 ml of Dia Activateur (6, 9 or 15 vol).
- Apply to dry hair.
- First application: start 20-minute timing after complete application.
- Root touch-up: apply to root area and adjust distribution according to the condition of the lengths.
- Emulsify carefully at the end of the processing time.
- Rinse until water runs clear.
- Wash with Metal Detox shampoo.
Warnings
- For professional use.
- Wear suitable gloves.
- Do not use metallic tools.
- Use only with recommended Dia Activateur.
- Respect the development time.
- Avoid contact with eyes and mucous membranes.
- Do not apply to sensitive scalp.
Frequently Asked Questions
Is L’Oréal Pro Dia Color Demipermanent Hair Colour 7.8 a warm or cool shade?
Shade 7.8 features a balanced nuance with a mocha undertone that maintains a natural result.
Is this shade suitable for adding depth to hair?
Yes. It is ideal for enriching colour and creating a deeper effect on medium blonde bases.
Does L’Oréal Pro Dia Color 7.8 cover white hair?
Yes. It can cover up to 70% of white hair, ensuring a uniform and natural finish.
Shade samples are for indication purposes only, as they may vary depending on the computer screen used for viewing. Therefore, Pluricosmética declines any responsibility for potential colour variations that may arise.
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 your chosen Diactivateur developer. Apply to dry hair.
First application: The 20-min processing time begins at the end of the application.
Root touch-up: Apply to the root area, begin the 20-min processing 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 for 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 water runs clear. Wash with Metal Detox shampoo.
Latest update: 2026-06-17 11:14:10
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