We recommend using these dyes in a 1:1 ratio with the 20 volume oxygenated cream.
With this type of dye, we recommend using 30 volume oxygenated dye in a 1:1 ratio, which attacks the gray hair better and allows the dye to penetrate it better, in addition to achieving greater unification in the final tone.
With this type of dye we recommend using 10 volume oxygenate in a 1:1 ratio.