Changing the look with a hair tint or colour is easy: The Igora Royal Boosters Permanent Color Creme from Schwarzkopf Professional enhances the intensity of hair colours with its High Definition Technology. The Igora Royal Boosters are combined with other hair colours from the manufacturer and are not stand-alone colours. However, the colour can be intensified or creatively mixed with the booster. Follow the Schwarzkopf Professional application instructions before use to achieve optimum results.You receive 60 ml content per tube Choose from seven different concentrates: Anti Yellow (0-11), Anti Orange (0-22), Anti Red (0-33), Copper (0-77), Red (0-88), Red Violet (0-89) or Violet (0-99). To use the product, you also need the Igora Royal Oil Developer to mix with the Permanent Colour Cream. Protective gloves are recommended when applying a hair tint or hair colour. You can also optimise the hair colouring experience with other products such as Igora Skin Protection Cream.