Will the hair loss treatment be effective?

I have been noticing slight symptoms of hair loss lately, so I am looking into hair loss treatments at a dermatology clinic. It seems that simple shampooing and supplements have their limits, so I am considering treatments that involve injecting medication directly into the scalp. Scalp mesotherapy I am wondering if the same hair loss treatment is actually effective.

First and foremost, I am most curious about the effectiveness of hair loss treatments. I would like to know if receiving treatment actually reduces hair shedding even in the early stages (widening parting, thinning crown), and how long it takes to notice changes such as hair becoming thicker again or fine hairs growing in. I am also curious about how many treatment sessions are required to see visible results.

I am also writing to inquire because costs seem to vary significantly from hospital to hospital. I would like to know the average cost per session, the typical price range for packages, and how much the cost increases if ingredients such as exosomes or growth factors are added.

As I am a working professional, I expect to need long-term treatment. I would appreciate it if you could also let me know the average treatment cycle and maintenance methods.