All Bio-T plant-based colorings are 100% natural and 100% organic, they are rich in coloring plants and easy to apply. Product advantages: Strong coverage of gray hair. Economical: 2 to 3 applications per sachet. Creamy and lump-free texture, easy to apply. Mixing and resting time: see available color chart. Instructions for use: Mix 30 g of plant-based coloring powder with 120 g / 130 g of hot water (about 50 °C) for blondes, coppers, and reds, and lukewarm water approx. 20 °C for browns, the texture should be creamy and fluid. Apply to desired areas, leave under film, rinse, shampoo, then proceed to blow-dry. For more details on mixing and resting times, refer to the color chart. Certifications and labels: Cosmébio / Cosmos organic, Cruelty free, Vegan. Plants from France, India, and made in France. Product with a BBD: Yes.