Choose Wella Colour Charm Demi-Permanent Hair Colour if you're looking for a gentle no-ammonia conditioning colour that delivers all of the colour and shine without the worry or lift! Use to add new richness or tones to your hair, to tone highlights, create lowlights, refresh faded hair colour or easily create a root shadow effect. The economical and effective 1:2 mix ratio means each tube creates enough for two applications.