発毛はつもう促進そくしんざいではありませんでした
hatsu mō sokushin za idewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 発毛促進剤

1. Was not a hair growth promoter.; Was not a hair restoration product.

Past/Perfective
Negative
Polite
Formal Register