Keep Light Hair Bright.

Four Reasons Professional No Yellow is your tool for naturally blonde, highlighted, and colored hair when warm and yellow pigments become problematic. Use the products to restore a clean tone to grey hair when it threatens to become dull and lackluster.
When yellow pigments break through, they can be balanced with violet pigments. Keep blonde hair bright and neutralize warm tones with Four Reasons Professional No Yellow Shampoo containing violet pigment. You can adjust the toning effect by customizing the processing time to meet your clients’ hair toning needs. A longer processing time means a stronger toning effect!

The line’s shampoo contains violet pigment. Yellow’s complementary color is violet, which neutralizes each other. When you want to keep blonde or grey hair clean or cool-toned, neutralize the yellow tones with violet pigment.

Hair color is formed from two primary pigments: eumelanin, which is a black-brown pigment, and pheomelanin, which is a red-yellow pigment.
When hair is lightened, lightening agents oxidize and break down the melanin pigments in the hair. The sun’s UV radiation also breaks down melanin in the hair, just like the chemical lightening process. Eumelanin usually breaks down more easily and quickly than pheomelanin, which is why hair turns orange first and eventually yellow during the lightening process.