1. The natural oxidation of pigments

Unlike chemical dyes, herbal hair color does not penetrate the hair fiber. It coats the surface with a layer of plant pigments. These pigments, extracted from dyeing plants such as henna, indigo, or katam, need about 48 hours to oxidize in contact with air and set permanently.

The crucial 48 hours after application

During this period, the color molecules intensify through contact with oxygen. This natural oxidation process reveals the final reflections and the depth of the shade. Washing too early with shampoo would prevent proper fixation and cause premature fading.

2. What happens if you wash too early

Loss of intensity and dull reflections

Washing your hair just hours after application removes some of the pigments that have not yet bonded to the hair. As a result, the color appears lighter, less even, and loses its original shine. Even a gentle shampoo can affect pigment adhesion if oxidation isn’t complete.

It is therefore recommended to wait at least 48 hours before the first shampoo. During this time, the hair continues to absorb pigments and gains shine.

3. How to care for your hair after coloring

The right habits to adopt

• Rinse thoroughly with clear water immediately after coloring, without using shampoo;
• Gently squeeze out excess water without rubbing, then let air dry;
• Avoid any occlusive or silicone-based products during the first two days;
• After 48 hours, use a mild, nourishing treatment compatible with herbal coloring.

4. When and how to do your first shampoo

Choosing a care product compatible with herbal color

The first wash should be done with a gentle sulfate-free shampoo with a balanced pH to preserve the plant coating. Avoid harsh detergents that can weaken the fiber and dull the color.

To prolong shine, complete your routine with the SuperCare Herbal Mask, formulated to nourish and help fix natural pigments over time.

5. The Tresse Paris method for longer-lasting color

At Tresse Paris, we always recommend rinsing without shampoo and waiting 48 hours to ensure full oxidation. This step is essential in our professional herbal method, guaranteeing deep reflections, long-lasting color, and a soothed scalp.