We couldn't stop laughing! My husband has brown hair with gray patches. I always wanted him to try Just for Men. He was curious too. So I bought a box and colored his hair. It was a pretty simple application. You just take the small color base bottle and mix it with the developer, then apply. You only have to wait for five minutes and then rinse it out and shampoo. Wooh! It was dark after only five minutes. We laughed and laughed. I told him he would have to wear a ballcap until it faded out. I also said "you don't have to worry about me being seen with you. It ain't happenin'! " Boy he looked like a different person. He said " You wanted me to try it. Now you will have to see me this way for six weeks." All in all, it was so funny and I will never buy haircolor for my husband again. I like the gray and he can keep it. He looks distinguished! Men look distinguished with gray hair. Women look old. Does Just for Men cover the gray? Yes, it does. It really works. I'm sure the color will fade after several shampoos. Color always looks pretty bold for anyone on the first day and week. The box states that Just for Men targets the gray. This is totally true. I bought him Light Brown H-25. Just for Men comes in 11 shades. It also leaves hair thicker and fuller, is ammonia-free and lasts six weeks as stated on the box. So if you want to get rid of gray/white hair, go for it. Just for Men will cover it. Be surprised, because you will look younger and different. I like the old hubby not the new. Come on six weeks!