Description
What It Is
L’Oréal Professionnel DIA DIActivateur 15-Volume (4.5%) Developer is a professional demi-permanent developer specifically formulated for use with DIA Richesse Demi-Permanent Haircolour. It is suitable for both natural and colour-treated hair, offering controlled lift and enhanced colour depth with professional precision.
What It Does
The 15-Volume DIActivateur pairs seamlessly with DIA Richesse to deliver:
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Reliable grey coverage
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Virgin hair application
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Tonal enhancement and correction
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Soft lowlights
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Colour matching and refreshing permanent haircolour
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Fashion and high-impact colour results
Its balanced strength allows improved pigment penetration while maintaining hair condition and shine.
Key Benefits
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15-Volume (4.5%) developer for demi-permanent colour services
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Ideal for grey coverage and fashion tones
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Enhances colour depth, richness, and longevity
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Smooth, creamy texture for easy mixing and even application
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32 oz professional salon size
What Else You Need to Know
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DIA colour systems mix in a 1:1.5 ratio with DIActivateur Developer
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Designed exclusively for use with DIA Richesse and DIA Richesse Hi-Visibility
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Use 9-Volume or 15-Volume depending on desired depth and intensity
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Not intended for use with non-DIA colour systems
How To Use
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Mixing Ratio: 1:1.5 (1 tube colour : 2.6 oz developer)
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Application: Apply with a bowl and brush or plastic applicator bottle
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Development Time: 2–20 minutes, depending on desired result






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