This shampoo for hair dyed reddish and reddish shades. I just paint hair in dark color with reddish midtone, and to me this shampoo is ideally approached! Shampoo came to me when it's time it was painted over and the paint color on my hair faded and faded. And what do you think? The hair after the first application brightened and began to look like a freshly painted! Absolutely gorgeous shampoo! Hair shiny, well-groomed, their color becomes saturated and rich. I just love it! Incidentally, I do love this brand. No wonder the word SHIKAI sounds similar to the word "chic". They have the same luxury shower gels.