I submit to your judgement hair serum from SYOSS as a part of which there is a keratin. This means is intended for professional use by hairdressers and stylists.

This serum appeared at me about a year ago. I tried to make friends honestly with it. Periodically used it, and again removed in a long box. At the moment did not use also a half of means, but already ripened for final parting.
Now I will tell you everything one after another that so disappointed me in this means. Take seat more conveniently, read, it is ready to listen to your opinion.
So, means is in a small bottle of black color. The cap is removed, and there we see a batcher nose.

The volume of a bottle is equal to 50 ml. It is spent economically. The expiration date after the first use is equal to one year, tells the drawing with an open lid and figures of 12 m about it. The product is made in Slovakia.

On the bottle there is a lot of exhaustive information on the means and producer. This serum is intended for restoration of the injured hair which became absolutely lifeless, dry and fragile.
That the producer guarantees:
- to return softness to hair;
- to restore structure of hair;
- to add them gloss.
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Color of serum transparent, on structure oily. The aroma is very pleasant, gentle, almost inaudible. I do not love when means has a himozny fragrance which also long disappears.

On the cap there is a sticker with information that this serum can be used in a new way, it is simple to add to shampoo at each washing of the head. This product can be used together with other conditioning agents behind hair.

I tried to use serum in the different ways.
1 option:
According to the recommendation of the producer, added a little means to shampoo at each washing of the head. In the course of soaping serum well mixes up with shampoo.
In a minute of light massage of the head, I wash away a soap skin from hair. At washing off of any changes with hair did not notice.
It also is clear that in 1-2 minutes means simply will not manage to work, will be able to settle on hair only. Therefore I recommend to wash hair with plentifully warm water. I do not use other additional resources for care of hair in this option.
That as a result:
Hair well comb hair, are not confused. Perhaps, even gloss appeared. I did not notice bigger improvement. But hair became heavier, are quicker soiled. Already literally for the second day they hang icicles. Pleasant it is not enough if still to consider that I try to accustom to wash hair them more rare, at least 2 times a week. Right there hair constantly look not tidily, dirty.
2 option:
Added serum to masks. On volume about a half of a teaspoon on a portion of a mask for hair. Time of influence of serum for hair was longer, than in the first option.
That as a result:
Result same, as well as in the first option. Hair are excessively weighted, quickly lose a type of purity. It absolutely not that I want to see.
There was also the 3rd option of use:
Before washing of the head applied on a cloth of hair and tips for 5-10 minutes, then usual washing of the head.
That as a result:
Yes the same, as in other options.
Conclusion: Because strongly makes heavier my hair, does them dirty, could not make friends with this means.
But nevertheless there are also pluses:
Smoothes hair, adds them gloss, looks after.
I can estimate this product on 3 points.
At me friendship did not happen to it, can it will turn out at you?