JUST FOR MEN Control GX + THK Thickening Shampoo with Grey Reduction, Shampoo for Thinning Hair with Alpha Keratin, Thickens Hair Up to 20%, Works with Every Hair Texture, 4 oz

I searched for the easiest way to get my hair back to its natural state, and Just for Men Control GX delivered. It’s quick, easy to use, and has a pleasant scent—sweet, but not overpowering. My hair had started turning gray in a few areas, and within days, it had returned to its natural black. The color holds well with no rub-off, which was a big plus. I wouldn’t recommend it for lighter hair tones, but if your hair’s black like mine, it blends in perfectly.Even my barber was surprised and asked what I’d been doing—my hair looks fuller and darker, just like it used to. It’s also gotten a little thicker, just as promised. Only caution: don’t leave it sitting on white countertops or bathtubs; it can stain if you’re not careful. Overall, I’m extremely pleased with this purchase, especially considering the price.

I'm 43 and have some light greying, not even close to going full grey, but enough that it is noticeable if your talking to me. I used the regular just for men grey reduction shampoo for the first time about 4 months ago because the grey in my sideburns was getting more noticeable and it bugged me - not sure why my sideburns decided to go almost full on grey while the rest of my hair had only scattered grey - but Ebenezer scrooge side burns just wasn't working. The original formal worked just enough that I bought it a second time. Decided to try this one out after the last bottle of the original formal ran out and it is much better: my hair seems to absorb the dye better, it definitely works better on thinner portions of hair like sideburns and hair cut with a clipper, and it does actually help to make my hair look thicker. Not sure if this is good for someone who is mostly greying but definitely is a decent option for anyone like me who has just started to get greys. Just note that it does not fully get rid of all of your greys but makes them less noticeable and blends them in much better. I use this about 2 times a week, if you used it more you might see more extreme results. If you don't want to use hair dye then this is a good option and it is better than the regular grey reduction by Just for Men. Worth the extra $$.

Not sure about the “thickening” part but the color does indeed work. It is too dark though so be careful if you have medium brown or lighter hair

This product works well. It controls gray as stated at a reasonable price. Ensure you wash your hands with Dial soap or dish soap immediately after application to prevent nail staining. This product works well, providing gray coverage as advertised, at a competitive price. To prevent nail discoloration, it's recommended to thoroughly wash your hands with an antibacterial soap or dishwashing liquid immediately following application.

The bottle design is piss poor. It's divided into two chambers. When you squeeze the bottle you don't get a consistent amount of shampoo and dye. You end up with about a 1/3 of the dye still in the bottle. You pay for something you can't use. You have to use it everyday or it immediately fades. It dyed my brown hair black on top but left the gray sides alone.