Color Erbe Castaño de Natur Erbe is a permanent, tone-on-tone gel dye that guarantees total coverage of gray hair, leaving hair shiny and fluffy, and that nourishes the skin and hair during coloring. Thanks to its biological extracts, it simultaneously performs a repairing, protective and conditioning function for the hair. The colors obtained with herbal dyes with biological extracts are faithful to the nuances of the color chart. For a better result, it is recommended to take into account the natural application base and the indications suggested in the color combinations. It is recommended to mix the color and the fixer well in the bowl, at this stage the oxidation process begins. Proceed to apply the dye with the brush, distributing the dye from the ends to the roots (in the opposite direction to growth), in order to facilitate the penetration of the dye into the hair scales. Insist more on the roots to better cover the regrowth. Leave to act for at least 30 minutes. After rinsing the color, proceed with an after color shampoo and always apply, with a light and even massage, the restructuring agent (contained in the package) The coloration can cause an allergic reaction which, in some rare cases, can be serious. To help you prevent the risk of an allergic reaction, it is essential to carry out, in all cases, the skin sensitivity test 48 hours before each application of this product. Avoid contact of the product with the skin and eyes, do not use it to dye eyebrows or eyelashes. If the product comes into contact with the eyes, rinse them immediately. If you wear contact lenses, remove them before thoroughly rinsing your eyes with water. Wear the appropriate gloves included in the package. Always rinse your hair after application. Prepare and apply the mixture preferably in a well-ventilated room. Do not inhale or ingest. Do not use to dye beards and mustaches or for use other than hair coloring. Never save leftover mixture. Open bottles only at the time of use. In case of partial use of the product, carefully close the bottles. Store the product in a cool, dry place, protected from light. Do not dilute or mix the contents of the bottles with other products or cosmetics. Keep all objects (brushes, bowls, dispensers) that come into contact with the dye clean. Keep out of the reach of children. Do not use on children