noun
curly hair; wavy hair
Slang term likening curly or wavy hair to wakame seaweed. Often used humorously or self-deprecatingly.
彼は自分のワカメ頭を気にしている。
He is self-conscious about his wavy hair.
湿気が多い日は、ワカメ頭が広がって大変だ。
On humid days, my curly hair gets frizzy and it's a pain.