頭皮メソセラピーは効果的ですか？

The effects of regular needle mesotherapy on the skin are long-lasting, but they do not last a lifetime. To maintain the results and prevent recurrences of hair loss or baldness, it is recommended to repeat the treatment after completing a 3-month course, but less frequently - for example, once a year.

Scalp mesotherapy is a procedure involving the injection of vitamin cocktails, amino acids, and other nutrients directly into the scalp, aiming to stimulate hair growth and improve its quality. This treatment can be effective in improving the condition of hair, reducing hair loss, and stimulating growth, however, its effects may vary depending on the individual characteristics of the patient and the health status of their hair.

The question and the answers given so far are correct, but I would go a bit deeper and dig into the source, not just the method, the specific problem of the person, and the goal they want to achieve. 1. It would be necessary to diagnose the reason for hair loss/baldness. It is possible that there are other methods to stop/reverse this process, for example: https://universeofmemory.pl/o-jeden-wlos-z-daleko-kurs-trychologiczny/ (I have not used this course and I do not have any profits from recommending it. I just came across it once.) 2. Consider all pros and cons of each method as well as costs and choose the optimal one.