My hair looks thinner around the crown of my head. Will Pantodil Hair Ampoule be effective?

Hello, I'm in my mid-40s, and my hair is getting thinner and thinner at the crown, which is very stressful. I've tried changing shampoos and even tried black beans, but nothing has improved. So, I'm thinking about trying the Pantodil Hair Ampoule, which you apply directly to your scalp. I've heard it's good for nourishing the scalp. I'm wondering if anyone who's used it has experienced hair growth or thicker hair. My scalp is quite sensitive, so I'm also concerned about it feeling sticky or itchy after application. What's the best frequency for using the Pantodil Hair Ampoule? Should I apply it every night, or only after shampooing? I've heard that hair loss management is crucial, so I'm anxious. Could anyone with knowledge of the Pantodil Hair Ampoule advise me on its value for money? It would be invaluable in helping me make a purchasing decision.