For me, it is the result I want. If there is a dark base, it takes and holds. If the base is 80% white, it does not take well, which is why the low ratings. I use it to maintain demi-permanent dye and the result is excellent even on a beard. Be careful, it stains your hands a little if you don’t wash them immediately after application - put on gloves or scrub them well right after use while you wait for it to work.

After using it at least 10 times and leaving the product on my hair and beard for at least 10 minutes, there is no change in color. What surprises me is that it comes off the hair easily, but not from the hands. I would not buy it again. I did not notice any side effects

I tried it and the truth is that it doesn't work miracles... it doesn't last long! Maybe I'll try it again

I don't know how many packages you need to actually see a ton of difference but the product gets top marks for advertising and 0 for results. In general, the whole range has nice scents but falls short on results.

I, who have very few white hairs, used 2 drops as if I were using shampoo and left it for 2 minutes on wet hair, and I immediately saw a difference. I would just be careful and not use it every day because it can make the hair very dark. Once a week, I believe, is just fine

A taboo that has always existed and will always exist for us men, they took it and presented it to us as something magical. It does absolutely nothing, I have tried it 3 times and left it on for 10 minutes!! Also, it's unacceptable that there isn't at least a disposable glove included in the package!!! 10€ wasted money!!

on the positive side the fragrance and easy rinsing, on the negative side that it does not do what it is intended for even with frequent use and always according to the instructions for use. 5/10

Attention ⚠ this product is not as described. For me, it causes side effects such as burning, flushing of the face, and increases blood pressure...

This is not just a shampoo, but it also has an effect. It gives a matte result and slightly darkens the hair. My hair is completely white and turns gray. So for me it is wonderful. Very natural color.

The hair looks dark blue. Very little change, don't expect to get rid of the white hairs. I wouldn't buy it again.

It does exactly what it promises.
I really don't understand the reviews that say they didn't see any difference or that the product does nothing.
With 3 applications I achieved the tone I wanted.

I bought it hesitantly without having high expectations and I’m glad it proved me wrong! I should note that I don’t have fully white or gray hair on most of my head! I’m 54 years old with visible white spots in my hair and beard! After 5-6 washes, the difference is very noticeable! They didn’t turn black, but the gray part is hard to spot. I first wash my hair with regular shampoo and then use this as a second wash, leaving it on for 4-5 minutes. I will definitely buy it again!

Absolutely zero result, one of the most useless purchases I have made.

Update:
Even worse is the representative who comes and votes every negative review as "not useful" for the nonsense he is selling.

The advertising that has been done for the product is clearly greater than its durability and results... I was not satisfied...

It naturally makes the hair grey but it doesn't last for a long time, also you will need a regular shampoo for cleaning after application because this one is not exactly ideal for cleaning I would say.

I have applied it so far 6 times, no difference... The gray remains. + it came to me via courier, as a result the packaging, due to the heat, opened and some of the product had spilled. I informed the company to send me another product, it's still on the way... Cheers (literally: good wines, meaning 'good luck with that')

It does what it promises, lasts as long as needed.
I used it for Santa Claus beard and did it for a 7-minute use, they turned a tone darker, exactly what I wanted.
The longer you leave it on, the darker it gets.
You use a small amount and apply it well with gloves.
Excellent product, exactly what I needed.
I just ordered two more.

For the job it is intended for, I was satisfied. It gives a slightly darker tone with each application.