
Colour theory is the foundation of any advanced hair colouring technique. Understanding the colour wheel, undertones, and complementary or contrasting shades allows you to predict and control the outcome of any colour service.
Key points:
Primary, Secondary, and Tertiary Colours: Know how these combine and influence tone.
Undertones: Hair has natural underlying pigments; e.g., blonde hair may have yellow or gold undertones.
Complementary Colours: Used to neutralize unwanted tones. For example, purple tones neutralize yellow in blonde hair.
Contrasting Colours: Create vibrant, fashion-forward effects.
Exercise:
Identify three complementary colour combinations for balayage on light, medium, and dark hair.
Write a short explanation of why each combination works.
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