Henna hair color is one of the best hair colors you can bet for. Hair colors are applied to cover your grey hair (also known as greys). Henna for hair may also be used to give a stylish look to your naturally black locks. There are various hair colors in market depending on your need, but henna hair color is best, being free from ammonia and related stuff. In market there are various henna dyes to choose from depending on your taste.