I am very satisfied, Very good product, very good packaging by the seller, received it in excellent condition and in a short period of time. Thank you!

It does what it promises. The grays turn black in just a few minutes. The result lasts for many days. I will buy it again.

Very good. It just needs proper application and a timer for how long you will leave it on. 3.5 to 4 minutes. If you leave it too long, it will darken and look bad. The grays should be covered, not the hair turning completely black. The brown may give some people a reddish tint (especially if the hair is very white). It is not permanent, of course; it needs refreshing every 1-2 months depending on the intermediate washes.

I am a professional hairdresser for over 20 years. The product is at the top of its kind. Discreet color overlay with graphite without worrying about root appearance. The results gradually appear with the oxygen in the atmosphere.

I apply it in my two stores and I have many customer experiences. However, there are some things you need to pay attention to.
1) It is made for discreet coverage. It does not have the immediate results of a dye or Loreal's Cover 5 that uses oxygen.
2) Be careful with shampoo! Only use its own or a baby shampoo with lukewarm water, not hot water.
3) Repeat every 15 to 20 days, a small amount at the edge of a comb, just like in the beginning, a small amount like 2 to 3 hazelnuts in size.
4) Do not apply when other dyes have been applied to the hair, the result will not be desired in terms of uniformity.
5) All of the above are done by the 100 people. It requires patience and you will see a discreet result.

Do not listen to what they say in the negative comments. It does its job just fine. Proper application of the instructions, good rinse, and you're ready. As time goes by, the hair becomes more and more gray. With washing twice a week, you can easily go for 2-3 weeks. The product is NOT A DYE, it simply helps the hair to gray successfully. If you use a lot of quantity and leave it on for 10 minutes, then the results are clearly more dramatic, but that is not the purpose of the product

I have not tried any similar products, it was recommended to me by a hairdresser and from the first try I remain faithful. I use it 3-4 times a month and I am very satisfied, I leave it on for 10 minutes each time. My hair is dark brown. I also tried the brown color, but it made my scalp a little red, then I mixed black-brown and it was much better. In the end, I concluded that black is the best choice.

Effective even if you wash it immediately. It causes irritations up to permanent spots when it comes into contact with the skin.

I have been using Black for the past 3-4 years and I use it about twice a week. It gives a very natural color to my hair without revealing the use of any kind of shampoo/dye. According to the manufacturer, it has an effect when there are no more than 70% gray hairs. Depending on the application time during washing, it takes more or less color. If someone sweats frequently (e.g. due to exercise), the color fades faster and takes on a slight brown shade, which is probably more noticeable to the user than to others. Very good product.

It washes out and loses its color after a few washes.
It is easy to use, but it needs a refresh every 4 days!!
Also, you need to protect your pillow because if you sweat during sleep, you stain the pillowcase!!

Do not waste your money on nonsense, minimal result that disappears with just one or two washes with the shampoos we all use. It doesn't work, I'm sorry.

I use it for my beard and it does an excellent job... I imagine it will do the same for hair.

I read the rest of the reviews and rushed to get the product. I was excited about how easy it was to use the foam without making a mess, but unfortunately, after 3 days, it gave me a yellowish tint, resulting in embarrassment. I tried again, and after 3 days, the same result. I was disappointed with the outcome, so I went back to the previous product I was using from Loreal.

The best thing I have ever tried.
Very easy application even in public toilets for example.
It doesn't stain or leave color on the skin under the hair like regular dyes.
I highly recommend it.

Discreet, does its job perfectly, natural result. Black is better because brown, if you have enough white, gives a greenish shade that makes you look ridiculous