"Already after the first use in November 2019, I am symptom-free. Tried various products for years (dry scalp with corresponding itching, without dandruff). Excellent product – huge thanks to Hautklinik KÖ-Hair GmbH Düsseldorf."

"Super shampoo, after the 2nd use I have significantly much less hair loss and my hair feels much more manageable. I am very impressed and will repurchase, 5 stars!!!"

"I was looking for a straightforward and effective product against hair loss and found it. Because no one could really determine whether my hair loss was hormonally caused or hereditary, I was looking for a product that can treat both. I have been using this product since the end of December and am totally satisfied. Easy to apply and above all well tolerated by my scalp. I notice small fine hairs in the bald spots. Very satisfied."

"I have been suffering from hair loss for some time and have tried various products. What I like about this serum is that you spray it on and don't risk pouring the entire liquid onto your head as usual. So it can be dosed perfectly. I am really impressed by the scent. That is really rare, otherwise I would have very often hair tonics that were already very hard to smell."