発毛 はつもう促進 そくしん ざいでしょう
hatsu mō sokushin zaideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 発毛促進剤

1. Hair growth promoter, probably.; It will likely be a hair growth promoter.

Polite
Presumptive
Conjecture