My husband has been using this product for a while now, and although it may be gradually darkening his gray, it is leaving an absolute mess in my bathroom. It stains surfaces it comes in contact with. My white tub now has dark stains from this product. Bummer.
My husband tried this and you could see a difference after the first shampoo. However he is tall and it did get on the ceiling of the shower as well as the shower curtain and is not easily cleaned.
These reviews are the subjective opinions of ChickAdvisor members and not of ChickAdvisor Inc.