FAQ: Can I adjust the strength of water colour?

I formulated water colour but it is super sensitive, so never dilute it past the fill line.

For very resistant hair you can use less water – the lowest is 55ml of warm water to one vial of colour. Never add anything to the mixed colour. Nothing is required to improve the performance of the product.

You can find all the information you need from the instructions included in the pack and also our colouring grey hair booklet which is available as a PDF online.