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Goldwell Topchic 3% 10 Volume Cream Developer Lotion Coloration Goldwell Topchic is a professional, salon-only, permanent color that guarantees intense colors with 100 percentage grey coverage. Its built-in equalizer system helps create beautiful, even color results from regrowth to ends, and its patented Coenzyme Technology and creamy-smooth lotion with IntraLipid guarantees 100percentage performance with the best possible protection for hair. For best results use the mixing ratio: 1:1.
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Mar 08,2023 
Easy to use. These colours basically show up in sunlight well. Also remains for long time. :)
My hairdresser uses it. It works great.