Bio Respect Coloring Cream - 6.1 Dark Ash Blonde from Bi-herba is an elegant, warm and luminous color cream dye that results in shiny and healthy looking hair with full coverage of bianchi hair. Bi-Herba is produced entirely in Italy. All Bi-Herba products use only 100% allergen-free raw materials, vegetable glycol, certified organic extracts and surfactants with selective cleaning power. It is advisable to wash the hair with a silicone-free shampoo. Mix the hair dye until you have a creamy consistency. Distribute the mixture evenly through the hair using a brush: strand by strand up to the tip. Leave the natural hair color on for 30 minutes. The longer you leave the natural hair dye on, the more intense the reflections you will get after coloring. Then rinse the product under running water. Hair dyes can cause an allergic reaction which, in rare cases, can be serious. Black henna tattoos can increase your risk of allergy. You must carry out a 48 hour sensitivity test before applying the color to the hair. Even if you have used hair coloring products before. Store in a cool, dry place.