Phytocolor 4 Chestnut Phyto is a dye that combines combines high technology with the plant properties of plants to obtain a striking and ultra-bright color. Its high concentration guarantees a striking natural color with light reflections. The 1st range of permanent coloration with ammonia-free plant pigments, with color results, hair beauty and respect for the scalp. Enriched with plant extracts, its treatment formula deeply nourishes and protects the hair fiber for soft and flexible hair. The entire range is recommended for use both for the first application and for continued use. In addition to achieving a change of look by providing a new color, all the dyes cover 100% of gray. It is recommended to apply the mixture of the product on the root and the excess on the hair -if it is dyed for the first time-, or touch up the root and the rest of the ends to ends - if you are covering gray hair- and leave it to act from 20 to 30 minutes. Expert tip: to achieve the most natural result, when more than 50% of the hair is gray, it is advisable to mix a natural color with a color with highlights, for an optimal result.