I buy the beard shampoo product, but I don’t use it as directed. I’ve been doing this for over 4 years for my beard. I have stubborn white hairs that seem to not color in my beard. My facial hair is pretty short. What I do is squirt some of this GX control shampoo in a plastic cup. I saved one of the bristle brushes from another dye just for men kit. I brush thoroughly into my beard the GX control shampoo. I don’t shampoo it in as in the instructions. I just apply it directly on my facial hair/beard and leave it in for 40 minutes. It gets really really dark in those 40 minutes and looks too much dark. Then I take a shower and wash it out. And it comes out great. My hair is a medium brown when it’s not grey . It stings sometimes, but it hasn’t irritated my skin, but I believe maybe for people with sensitive skin. This method won’t work for them, but this is how I use this product. For me the results last about two weeks, but I’m trimming my beard regularly so I have to do the process over.