This product must be used in conjunction with the correct strength peroxide.
Ensure to follow the mixing ratio indicated on the packaging of the hair colour. (e.g. 1:1 = 1 part colour to 1 part peroxide, 1:1.5 = 1 part colour to 1.5 parts peroxide, 1:2 = 1 part colour to 2 parts peroxide).
If you have any questions regarding the correct use of this product, please contact our store to speak with one of our experts.