Demi-permanent dark blonde hair colour with golden copper reflect, ammonia-free for gloss shine and luminous colour
The L’Oréal Pro Dia Color Demi-permanent Hair Colour 6.34 is a tone-on-tone, ammonia-free hair colour, designed to work on dark blonde bases with a warm and luminous direction. Shade 6.34 is a dark blonde with golden copper reflect, ideal for warming up the colour, intensifying luminosity, and adding life to dull hair.
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 balanced dark blonde with golden copper reflect and visible gloss shine. 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 continuous colour, with tone-true reflects and no artificial effect. Suitable for revitalising dull hair, enriching 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 ensures 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 6.34 dark blonde with golden copper reflect
- Ammonia-free formula
- Up to 70% grey hair coverage
- Lasts up to 6 weeks
- Up to 3x more shine
- Lost melanin replacement technology
- Luminous warm reflects
- Lightens 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 6.34 a warm shade?
Yes. Shade 6.34 has a warm direction with golden copper reflect.
Is this shade suitable for adding more luminosity to hair?
Yes. It is ideal for enriching colour and increasing shine on dark blonde bases.
Does L’Oréal Pro Dia Color 6.34 cover grey hair?
Yes. It can cover up to 70% of grey hair, ensuring a natural and uniform 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 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...). Only use 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, 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 development time, carefully emulsify for a few minutes. Rinse hair thoroughly until the water runs clear. Wash with Metal Detox shampoo.
Latest update: 2026-06-12 00:13:36
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