Cosmetology · Haircoloring Principles

Developer (for example, hydrogen peroxide) is used in permanent color mainly to:

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Correct answer

Help develop the color and, depending on strength, lift natural pigment

A Cleanse the hair
B Cool the scalp
C Help develop the color and, depending on strength, lift natural pigment
D Cut the hair

Why this is the answer

Developer, commonly hydrogen peroxide at various strengths (volumes), is mixed with permanent haircolor to activate and develop the color and, depending on its strength, to lift (lighten) the hair's natural pigment so the new color can deposit. Higher-volume developers lift more. Developer must be used at the strength and in the proportions the manufacturer specifies. Understanding the basic role of developer in permanent color — develop and lift — is part of color theory, while precise formulation is learned through training.

Source: Hair Care — Developer

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About this topic: Haircoloring Principles

Haircoloring principles cover the colour wheel and levels, the categories of haircolour (temporary to permanent), developers and volumes, lightening, patch tests and formulation. The chemistry of oxidative colour is tested every time. This is one of 8 Hair Care questions on haircoloring principles, each with a full explanation on a single study page.

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Developer (for example, hydrogen peroxide) is used in permanent color mainly to:

Why this is the answer

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About this topic: Haircoloring Principles

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