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Permanent Argan Oil Advance Colorant for full white/grey coverage. It offers vibrant, long lasting colour while treating and protecting hair against damages. It's developed with pigment-lock technology that locks colour into the hair without the use of ammonia (a controlled oxidation mechanism allows micro-colorants to easily penetrate the hair and once trapped inside to undergo further oxidation, forming larger coloured molecules that offer intense colour which does not fade). Argan oil and natural keratin act in the deeper hair layers, restore moisture levels and protect against damage. Oat extract (rich in B complex vitamins and microminerals) forms a protective film that increases hair strength and elasticity.