It did a very good job on my hair against hair loss and strengthening.... It didn't help with frizz at all, it had a very nice smell, and it's easy to use. The negatives are that it's a bit heavy and a little greasy

Incredibly greasy.
Smells wonderfully fruity but for very little time.
Weighs down the hair.
DOES NOT reduce frizz.

I have normal hair, I apply 2-3 drops on the lengths (not 4-5 as recommended) and when my eyes dry it feels like I've just washed them.
I wasted 10€ at Sklavenitis for nothing.
For 6.5€ I can get a much better and lighter one from Elvive.

I have been using this specific serum along with the shampoo for about 2.5 to 3 months. I will choose it again because a) it strengthened my hair, b) reduced hair loss, and c) leaves a nice scent in my hair. Personally, I saw the promised results in combination with the shampoo as mentioned above. It would be good, of course, if it was at a more affordable price, hence the 4-star rating.

So far, just 3 stars because it smells nice and doesn't have a greasy composition, but I haven't seen any results in terms of its effectiveness

It smells very strongly of synthetic fragrance, not at all natural, and the ingredients do not do any good to the hair. I should also mention that it caused discomfort. Prefer professional products that are equally affordable and not as harmful to you and the environment.