What happens when hydrogen peroxide is mixed into the lightener formula ?
a. The hydrogen peroxide reacts with the lightener, causing it to foam and become more effective at lifting hair color.
b. The hydrogen peroxide does not react with the lightener and has no effect on the hair color lifting process.
c. The hydrogen peroxide causes the lightener to become less effective at lifting hair color and may result in uneven or patchy results.
d. The hydrogen peroxide creates a chemical reaction with the lightener, producing a strong bleach smell and potentially harmful fumes.