| Kerastase's Chroma Perfect 2 (Reflection) Post-Coloration Cleansing Care Very Sensitised Colour-Treated Hair Reveal mirror shine. Beautiful and shiny colour depends on the reflection of light on the hair fibre. Optimal light reflection is a combination of 2 optical phenomena: Reflection- The rays of light are reflected when they hit the cuticle of the hair fibre. Reflection is stronger and more vibrant when the fibre is smooth and even. The optical term for this reflection on an ideal surface is calleda "mirror effect". Repercussion- The process of light reflection on the hair surface is multiplied as many times as the rays hit the hair fibre. The repercussion phenomenon is intensified when the fibres are detangled and individualised. This post-coloration cleansing care avoids having to rinse twice. The Fibrionic System helps intensify color shine. Helps eliminate colour residue. . | 
