How long will the chestnut color last and how effectively does it cover grey hair?

Fitocolor Cream Hair Color 4.0 Chestnut is a permanent dye, meaning the pigment develops inside the hair shaft rather than sitting on the surface. As a result, the shade typically lasts until new growth appears, often 4‑6 weeks depending on individual hair growth rate and how often you wash. Frequent washing with gentle shampoos helps preserve the color, while harsh sulfates can accelerate fading.

Grey coverage is one of the key advantages of permanent formulas. The dye molecules penetrate the cuticle and deposit throughout the hair, which allows them to mask grey strands more effectively than temporary tints. The degree of coverage can vary: fine or highly porous hair may show more immediate grey reduction, while coarse or very grey hair may need a second application or a slightly longer processing time to achieve the desired uniformity.

To maintain an even chestnut look, touch up the roots as they emerge and consider a refresh treatment every 4‑6 weeks. Avoid overlapping previously colored sections excessively, as this can lead to over‑processing and may affect the overall gloss. Regular conditioning keeps the cuticle smooth, helping the color remain vibrant longer.