Enriches and protects the vibrancy of colour-treated hair. Science: Inspired by beauty, grounded in science, Infusium 23 offers specialized hair care solutions that are proven to enhance the texture and condition of your hair. Infusium 23 has combined decades of knowledge and experience with scientific advances to create (Colour)ologie Shampoo. Solution: Specially designed with our unique i23 essential treatment complex, (Colour)ologie Shampoo enriches and protects the vibrancy of colour-treated hair. (Colour)ologie Shampoo cleanses to remove residue and build-up while nourishing hair from root to tip. Made in USA of US and/or imported ingredients.