matrix socolor grey coverage color chart
Pink + Grey 1:1 with 20 Vol (6%) Matrix Cream Developer 35–45 minutes for maximum coverage Grey + Grey 1:1 with 20 Vol ... 1 part SOBOOST and 3 parts Color Sync or SOCOLOR.beauty when using to boost the intensity of your formula. Quite the opposite—it’s hair that is free of color or non-pigmented. With Socolor theres no guesswork.