Gentle and bold, glossy colour for up to 8 weeks, even on dark bases. Here’s to the bolder colour you want, with the moisture you love! Natural Instincts Bold gives you gentle and bold, glossy colour for up to 8 weeks, even on dark bases. With argan oil, açaí and guarana extracts and VitaBoost Colour Amplifier, get smooth & moisturized hair with bold colour. 0% ammonia, and no animal derived ingredients. It’s ideal for dark bases and all hair types & textures.