Contains a very small amount of ammonia and is supported by collagen that penetrates the hair layers during the coloring process to treat damaged hair from the inside out, nourishes the collagen serum for the hair, and makes it softer. Usage: Mix a quantity of hair dye in a non-metallic bowl with double the amount of oxidizing cream and collagen serum. Divide the hair into four sections. Apply the product to the hair and keep it at a 1 cm distance from the roots. For the last time, leave the preparation on the hair for 30 to 40 minutes, then rinse thoroughly with water. Product barcode: 8053323157830