Logona Mineral Clay Preparatory Treatment prepares your hair for coloring with herbal hair dyes Containing green mineral clay and moisturizing birch leaf extract, this natural formula intensively cleanses the scalp and effectively removes hair from styling and grooming residues, silicone-containing products, skin cells, and excess oil, ensuring that the Herbal hair dye can be significantly better absorbed into the hair. It is recommended to apply using the dye brush, apply to dry or damp hair strand by strand starting at the roots, and then apply to the rest of the hair. Leave for approximately 10-15 minutes. Finally, carefully rinse the hair with plenty of water. For chemically colored hair, we recommend using the mineral clay pre-treatment two days in a row. Finally, rinse your hair well with warm water. The hair is now perfectly prepared to be colored with plant-based hair dye.