My father is using this product of garniergarnier hair colour. His reviews are positive towards this . I also can see it . This gives hair a natural look. Once you use it , it gives enough shine to hair to about 70-90 days. Means about 2.5-3 months .it comes with double colour effect. It gives different colour in sunlight and in shelter it gives different colour.only problem with it is it gets start itching, so use it safely.otherwise it is a good product.