Hey,
I have a question regarding Wella Koleston Perfect. I understand how the numbering system works with all the tones except with the 0 (natural). Can someone explain to me what is the difference between 7/ or 7/0 or 7/00? Also how 77/0 comes into the picture and how to compare that to the others? When should you use which one? What do you need to consider when you would like to choose one of them?
I heard different opinions from colleagues, but what is the "science" behind it? I tried to google it, but I did not get any clear answer even from their Wella catalog: https://www.glemis.ro/pdf/catalog-vopsele-wella.pdf
Thanks in advance for your help.
I have a question regarding Wella Koleston Perfect. I understand how the numbering system works with all the tones except with the 0 (natural). Can someone explain to me what is the difference between 7/ or 7/0 or 7/00? Also how 77/0 comes into the picture and how to compare that to the others? When should you use which one? What do you need to consider when you would like to choose one of them?
I heard different opinions from colleagues, but what is the "science" behind it? I tried to google it, but I did not get any clear answer even from their Wella catalog: https://www.glemis.ro/pdf/catalog-vopsele-wella.pdf
Thanks in advance for your help.