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Professional hair colour mixing guide featuring L'Oréal Majirel, Wella Koleston Perfect, L'Oréal INOA and Dia Color with a tint bowl and brush, covering colour mixing ratios and processing times for salon hairdressers.
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How to Mix Hair Colour: Ratios & Times for Majirel, Koleston, Igora & Dia

Charlotte Read

Permanent colours mix at 1:1 or 1:1.5, demi-permanents at 1:2, high-lift at 1:2. Brand-by-brand mixing ratios and development times for Majirel, Koleston, Igora and Dia.

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