Clairol Professional Beautiful Advanced Gray Solutions 4A Chai Brown is a semi-permanent hair color that provides intense gray coverage and adds luster to dull-looking hair. This hair color is gentle enough to be used right after relaxing and does not contain ammonia or peroxide. With Advanced O2 Technology, it uses oxygen in the air to develop color, resulting in a shiny and moisturized color that lasts up to 12 shampoos. Achieve a beautiful and vibrant hair color with Clairol Professional Beautiful Advanced Gray Solutions 4A Chai Brown.