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

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.

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.

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

I have used Just For Men products for over 20 Years and this product since it first became available. I can also say it has made Daily Maintenance of my grey hair So Much Easier to Maintain. Thank You Just For Men!!!

Product seems to work, but they really should have it in colors. I have dark brown hair. I really feel like if I use this too much my hair turns black.