Board Thread:General Discussion/@comment-24319911-20160701130131/@comment-27391307-20161008124158

Seeing as we only know Saitama broke his limiter and we have no other examples to compare with, one could make the statement that hair-loss = limiter break

That doesn't mean that is how it is for all characters who break their limits. Blast might be someone who managed to break his limiter and keep the hair.

BTW , It wasn't just the hair loss that Saitama have to pay for his limiter. Genus said it was the hair loss and the feeling of alienation he felt.