cosmpro Black Hair Dye Shampoo 3 in 1 for Women/Men for Gray Coverage Instant Hair Color Shampoo Semi Permanent Champu Para Cana

I tried this hair dye shampoo two days ago and so far I’m really happy with the results. The color came out exactly as described — a nice deep black that covered my hair evenly. My hair looks shiny and feels soft after using it, which I liked because some hair dyes can leave hair feeling dry. The application was very simple. It works like a regular shampoo: you apply it to the hair, leave it on for about 15–20 minutes, and then rinse. I appreciated how convenient that was compared to traditional hair dyes that require multiple steps and mixing. I did have a small delivery issue at first where my order seemed delayed, and a replacement was sent. The original package ended up arriving afterward, but I returned the extra one without any problem. Aside from that shipping confusion, the product itself worked very well. After two days, the color still looks rich and natural, and I would definitely consider using this again in the future. If you’re looking for a quick and easy way to refresh your hair color at home, this shampoo is a good option.

I tend to get gray hairs right at the front—which is quite a hassle to hide. Since they grow back so fast, I wanted a low-maintenance solution that didn't require me to run to the salon every two weeks. The results look incredibly natural and cover the grays perfectly. I’ve been using this for several years now! 100% recommended.

This shampoo is too good to cover gray hair, with its use I have a breath of hair dyes since this product does its job excellently and lasts a long time so that gray hair reappears again

Very easy to use leaves hair smooth and silky true colors

It very nice but expected it to last at least 3 months before next use

Love this so easy and less expensive

I bought this two weeks ago, was very skeptical to try after the warning about allergies even though I have no known allergies. I did the test as recommended but not behind my ear but on my upper arm because I wanted to make sure I can see the results of the test. Did not leave it for six hours as recommended got frustrated was afraid to use so I put in the trash last night….This morning I decide to remove it from the trash and use the dye…..it really really works great….great coverage of gray hair I am sorry I did not take a before picture….awesome and easy to use……next time will take a before and after pic. My hairline grows out really fast, I am over 70 so this is to be expected. I only need to color hairline. Highly effective.

This product is amazing. It covers not only roots you can see, but the whole she-bang - the parts you can't see, like the back of your head. After years of using standard box dyes for roots, I'm thrilled to have found this product, which I find much better, for its full coverage. What you may not glean from the other reviews: 1. It's super-duper messy. The dye gets everywhere - on you and your surroundings. What I learned: To prevent stains on you, put Vaseline or a blocker cream around your hairline and ears. To prevent them on your home, cover all nearby surfaces (and then some). If you'll be showering the dye off and have a shower curtain, don't be surprised that it will get stained. 2. Use the little clear plastic dickey that comes with the dye to cover your shoulders and upper chest (it's like a short version of a dry cleaner's garment cover, but with elastic around the neck). But remember to smear Vaseline on your arms, chest, and neck to prevent serious staining. 3. The color coverage is excellent. The only thing it doesn't cover are those stubborn grays around the hairline. But what really does? 4. The dye comes off, visibly, every time you wash your hair. It also comes off on your towels and can drip onto your bathrobe. I recently traveled and brought my own towels - black ones, like they use at a salon - so as not to ruin my host's towels. 5. Some people reported allergic reactions. That will always vary from person to person. I'm okay on that front, but do find the chemicals a bit irritating just on day one. In summary, I find this product messy, but effective. A product improvement would be for the manufacturer to offer tips or product (i.e., better than Vaseline, which only works partly) to prevent stains - and more than two of those dickeys in the box.