I am dark brown. Half of my hair is white. With 40 volume developer from the same company, in a ratio of 1 tube of dye and 100 ml of developer, on bleached hair, 45 minutes of waiting, I get a desired platinum blonde without bleaching. I wouldn't change it for anything!

The worst thing... I'm not talking about the specific shade but about the 5ar, koleston gave me a burn on my head and I really regretted the money I gave to the hairdresser... only natural for me to have my head calm and without wounds...

I have had white hair since I was very young. My hairdresser used this specific product on me and for the first time, the result lasted so long. Usually, within a week, I would see coppery-white hairs appearing, but not with this product. In fact, I applied it myself for the second time, and it covered my white hairs perfectly, naturally, and for a long time. I use it with a 20-volume developer, and it turns out as a dark chestnut brown on me (I have brown hair with many white areas)

Very good company and quality with long-lasting color. However, after the change in packaging, the shades became warmer and slightly darker. The 9/0 is now similar to the 8/0 with some warm tones. It needs to be combined with a sand or pearl shade for a more neutral result. Otherwise, I would buy it again due to its longevity and online price.

It is a reliable company with professional products. It never disappoints the result. The quality is excellent

I have natural dark brown hair color and I bought No8. It turned out to be dark blonde. After 2 weeks, the white hairs appeared as if they had faded where it had been dyed.

The color came out much darker than expected and the hair turned out jet black while the base was a light brown