Famous Low Ammonia Hair Color Ideas. Ammonia has been tried, tested and true throughout the history of hair color. No, hair color with ammonia is no more harmful than any other hair coloring product, as long as:
Our scientific studies show that, for permanent colour performance (with a lift of three levels or more and up to 100% grey coverage), ammonia protects the hair structure better than the alternative: Web it is used in hair coloring to open the outer covering of the hair shaft (known as the cuticle), allowing the hair color dyes to penetrate into the inner portion of the hair shaft (the cortex) where the color remains. Web no more itchy scalp:
