How much peroxide do I mix with Wella Koleston Perfect?
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Koleston perfect is a professional dye, they do tend to be better quality than box dyes but there are more variables you need to control. You need to follow the directions on the product exactly. The dye and peroxide are mixed together, you should weigh it to get a precise 1:1 ratio.
In this regard, what is the mixing ratio for Koleston Perfect?
The mixing ratio is 1 part of color cream (Koleston Perfect + Special Mix) mixed with 1 part of Welloxon Perfect.
In this way, how long does Koleston Perfect take?
Full-head colour, first-time application: dampen the hair. Distribute the colour from roots to ends and evenly comb through. Development time: HEAT: 30-40 min / + HEAT*: 15-25 min.
Your mix will be more wet, & more runny. If it is way too runny, you may end up lightening the hair, but not depositing enough color. It will end up thinner, flatter and last less long.