Hair ServicesQuestion 348 of 484
A client has level 6 natural hair and wants to go to level 8. Which volume of hydrogen peroxide developer is typically appropriate when used with a permanent color?
a.10 volume (no lift)
b.20 volume (1-2 levels of lift)
c.30 volume (2-3 levels of lift)
d.40 volume (3-4 levels of lift)
Explanation
20 volume peroxide provides approximately 1-2 levels of lift and full gray coverage, matching a 2-level lift from 6 to 8. 10 volume gives no lift (deposit only), 30 volume lifts 2-3 levels, and 40 volume lifts 3-4 levels and is generally reserved for high-lift formulations.
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