But 99% of the time:

: It grows in small, often undefined coils that feel harsh to the touch.

: Type 7 is characterized as an extreme version of coily hair. It is generally very fragile, dry, and has a high degree of shrinkage.

7Z hair is a type of curly hair that has a distinct "Z" shape. It is a subtype of curly hair that is tightly coiled and has a zig-zag pattern. The "7" in 7Z hair refers to the number of curls per inch, which is typically high, resulting in a very tight curl.