Purpose As part of Matrix's finest hair colour lines, Color Insider, Matrix Color Insider 4RV (4.62) Red Violet Brown Permanent Hair Colour offers prestige, long-lasting colour results. As well as giving your hair powerfully vibrant colour, it will boost shine to a new and improved level. Making people look twice will become a daily occurrence with your hair's new enhanced glow. Method When using Matrix Color Insider 4RV (4.62) Red Violet Brown Permanent Hair Colour, please consult instructions, the L'Oréal website or a professional for the best results. Ask your professional hairdresser for an in-depth colour consultation to help determine your perfect shade. Why it works Matrix Color Insider 4RV (4.62) Red Violet Brown Permanent Hair Colour uses an extremely high quality formula which features ODS2 (Oil Delivery System), a technology which helps to optimize the effectiveness of the hair colour system.
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