L’Oréal Pro Dia Color Demipermanent Colour 4.20

Ammonia-free, tone-on-tone brown colour with iridescent reflects for gloss shine and luminous colour

L’Oréal Pro Dia Color Demipermanent Colour 4.20 is an ammonia-free, tone-on-tone colour designed to work with brown bases, delivering a luminous finish and delicate iridescent reflects. Shade 4.20 is positioned on a brown base with an iridescent direction, ideal for enriching colour and adding dimension without compromising naturalness.

When applied to dry hair, the creamy texture uniformly coats the hair fibre, allowing for precise control during the service. The colour develops progressively, revealing a brown with a subtle reflect and visible gloss shine. Hair gains visual depth, greater uniformity, and a more cared-for appearance along its entire length.

The lost melanin replenishment technology works inside the hair fibre, replicating natural colour and filling chromatic irregularities. The result is a more continuous and balanced colour, with true-to-tone reflects and no artificial effect. Suitable for revitalising dull hair, evening out faded tones, or softening the appearance of white hair.

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 finish. The ammonia-free formula guarantees greater comfort during the service and respects the hair fibre.

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

Key Features

• L’Oréal Professionnel demi-permanent colour
• Shade 4.20 brown base with iridescent reflect
• Ammonia-free formula
• Up to 70% white hair coverage
• Lasts up to 6 weeks
• Up to 3 times more shine
• Lost melanin replenishment technology
• True-to-natural tone 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 Demipermanent Colour 4.20 a shade with a visible reflect?

Yes. Shade 4.20 features a subtle iridescent reflect that adds dimension and luminosity to the hair.

Does this shade significantly alter the natural hair colour?

No. As a tone-on-tone colour, it intensifies and enriches existing colour without aggressive transformation.

Does L’Oréal Pro Dia Color 4.20 cover white hair?

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

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