Final answer:
High-lift colors typically use hydrogen peroxide developers with higher concentrations of hydrogen peroxide (20-40 volumes).
Step-by-step explanation:
Most high-lift colors use hydrogen peroxide developers with higher concentrations of hydrogen peroxide, typically in the range of 20 to 40 volumes (6% to 12%). These higher concentrations provide stronger and more effective bleaching action, which is necessary for achieving lighter hair shades. It is important to note that different brands and products may have variations in the specific hydrogen peroxide concentrations used.