Punch perm

From the 1970s until the mid-1990s, it was popular among yakuza, chinpira (low-level criminals), bōsōzoku (motorcycle gang members), truck drivers, construction workers, and enka singers.

The punch perm began to fall out of usage as a result of its general association with the yakuza, as well as normal fashion trends.

Naganuma modified the iron by filing it into a hexagonal shape, like a pencil, which created a tighter hold.

[1] He originally named the style "champion press", however, it came to be called "punch perm".

[2] In the present day, few barbers are trained in creating the punch perm due to a fall in demand and the rise in Japanese men having their hair cut at salons, rather than barbershops.