Curly hair style S-shaped or SS-shaped.

Ballon perm style is not affordable for short hair but medium-length hair and long-hair.

Medium-length is the most suitable for cute Ballon-style and long-hair Ballon perm makes naturally waved-hair style.

Triangle S-shaped or SS-shaped curly hair is the outstanding point of the Ballon perm therefore it is not suitble for a person who has short layered-hair.