Osmo Ikon Colour Additive - violet 50ml

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Colour Additives are a collection of multi-use neutralising solutions suitable for use with any lightening formulas. The Violet Colour Additive neutralises yellow tones. 3 pumps of OSMO IKON Colour Additive to 10g of bleach powder. Add 30ml of developer and mix well. Apply directly to dry hair. Process as normal. Rinse thoroughly. With no compromise on development time, the highly concentrated pigment helps deliver the perfect super-clean base for all your colouring treatments. Completely cruelty-free. 100% vegan friendly. Show more