Corpore Sano Tint Chestnut is enriched with certified Organic Sesame oil and Keratin vegeta, which provide hair with a permanent color with an intense, bright and long-lasting color. Corpore Sano's new line of permanent dyes is the real revolution. Its innovative formula provides maximum coloring and protection to the hair, providing shine and softness and facilitating the natural balance of the scalp. Its formula is enriched with natural ingredients that facilitate natural hair and scalp protection. It is recommended to have clean hair, once clean prepare a paste, which must be well dissolved and without lumps. Start applying the mixture with the help of a dye brush starting from the roots, smearing strand by strand and always lengthwise, not taking too long to prevent the mixture from cooling down. Once the paste is applied, put on the plastic cap to prevent the paste from drying, leave it on for 30 minutes. After that time, rinse the hair well with plenty of warm water. People sensitive to PPD may also be sensitive to other ingredients in the Corpore Sano formula. Our dyes contain another phenylenediamine, specifically “Toluene -2,5-diamine sulfate”. A 48h sensitivity test must be performed. before applying the dye.