Products comments are very extreme, I decided to test the same thing for me.
Marketing side, I did a little statistical study on feedback by trying to detect any fakes (people who put 5 stars noted with nothing else on amazon) on different packs, but no big anomaly n ' in came out. That's something.
Now about the product, it is not a miracle cure for sure. Personally, I think this product actually contains elements that can help the growth of the beard, like some dietary supplements herbal can help fight against stress or whatever. Nothing fufu well, but apart losing money, one does not risk much.
It's been over a month now that I attacked the treatment, no large change noticed. Finally, if my poor 3 hairs on the chin pushed, which makes sense since it is advisable not to shave. (If you stop to shave the beard grows, thank you but no need to Beardilizer to reach this conclusion)
However I did not notice any particular grows due to the treatment.
Finally, the little communication made by the mark on the scientific aspects of the product strengthens me in my skepticism. I'll take a x1 pack just to finish my treatment and I would make my comeback here.
In conclusion I feel that we are at the same level of efficiency as yogurts that help digest better, or even to drink milk in the morning strengthens our natural defenses, for example. That is not completely wrong, but it is very very far from the miracle product.