Hair ServicesQuestion 449 of 484
A client asks for a 'double-process' blonde service. Compared with a single-process color, a double process means:
a.The same single bottle of color is applied twice in one sitting for richer deposit
b.Two separate chemical steps are used: first a pre-lightener (bleach) to remove natural pigment to the target level, then a separate toner or oxidative color to deposit the desired tone
c.Two stylists are required by California law to perform the service
d.The hair is shampooed twice before color is applied
Explanation
A SINGLE-process color completes lift (if any) and deposit in a single application of one formula. A DOUBLE-process service uses two distinct chemical steps in sequence: a pre-lightener (typically powder bleach plus developer) lifts the natural pigment to the required underlying level, then a separate toner or oxidative color is applied to deposit the chosen cool, neutral, or warm tone. This is the standard route to pale-cool blonde from a darker natural starting point. California licensees perform both processes under CCR Title 16 §979.4. Option A confuses re-application with double process. Options C and D invent rules with no statutory basis.
Law Reference: CCR Title 16 §979.4Practice all 484 questions free — no signup required.
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