L’Oréal Pro Dia Color Demi-Permanent Hair Colour 5.1

Ammonia-free demi-permanent cool brown hair colour for gentle neutralisation and gloss shine

The L’Oréal Pro Dia Color Demi-Permanent Hair Colour 5.1 is a tone-on-tone, ammonia-free colour designed to work on brown bases with a balanced cool reflection. Shade 5.1 is positioned as a cool brown, ideal for softening warm reflections and maintaining a natural result with greater chromatic control.

When applied to dry hair, the creamy texture allows for even and precise distribution. The colour develops progressively, revealing a cool brown with a visible gloss effect and a homogeneous finish. The hair appears more uniform, with immediate shine and a well-groomed look along its entire length.

The lost melanin replenishment technology acts inside the hair fibre, replicating natural colour and filling chromatic irregularities. The result is a continuous colour, true to the base shade, with balanced reflections and no artificial contrast. Suitable for revitalising dull hair, neutralising unwanted warm reflections, 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% natural origin ingredients, this hair colour offers professional performance with a gentler approach. Suitable for colour maintenance, reflection neutralisation, and enhancing shine in brown hair.

Key Features

• L’Oréal Professionnel Demi-permanent hair colour
• 5.1 cool brown shade
• Ammonia-free formula
• Up to 70% white hair coverage
• Lasts up to 6 weeks
• Up to 3 times more shine
• Lost melanin replenishment technology
• Warm reflection neutralising effect
• Lightens up to 1 tone and darkens up to 4 tones
• Up to 92% natural origin ingredients
• Creamy texture for easy application
• Professional 60ml format

Frequently Asked Questions

Is L’Oréal Pro Dia Color Demi-Permanent Hair Colour 5.1 a cool shade?

Yes. Shade 5.1 has a cool direction, ideal for balancing warm reflections.

Does this shade help neutralise orange tones?

Yes. It can soften unwanted warm reflections, maintaining a natural result.

Does L’Oréal Pro Dia Color 5.1 cover white hair?

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

Shade samples are merely indicative, as they may vary depending on the computer screen used for viewing. Therefore, Pluricosmética disclaims any responsibility for any colour variations that may arise.