Although most who color their hair find it so important that they would be willing to endure the hassles for the sake of covering roots and greys, consumers are always looking for hair color that is easier and more convenient to use. The main complaint about boxed hair color, or any hair color for that matter, is the offensive smell. Since many hair colors use ammonia to swell the hair's cuticle in order for the color to penetrate the hair, the overpowering ammonia smell can make a hair coloring experience very unpleasant. People also often complain about the peroxide component of hair color. Peroxide acts as an oxidizer to remove existing hair color before the new color is deposited. It also can create an unpleasant smell. The peroxide component of the hair color must also be used with great care, as it can be quite messy if spilled, bleaching fabrics and also being harsh if left on the skin or certain bathroom surfaces.
