The Subrina Professional CremeOxyd Hydrogen Peroxide Lotion is a crucial component when using hair dye or bleach. It is designed to work in conjunction with the dye or bleach, initiating the chemical reaction that results in the desired hair transformation. The strength of the hydrogen peroxide (usually measured in volumes) can influence the level of lifting or deposit of the color. It is important to follow the specific instructions of the hair dye or bleach product you are using to achieve the best results.