Type 4 Hair
Type 4 hair is coily.
Type 4a curls have a visible looped-shaped pattern and are about the circumference of a crochet needle.
Type 4b curls have more of an angular zig-zag shape. These curls are much tighter and smaller in circumference than type 4a coils.
Type 4c hair is known for its super tight zig-zag spirals. The zig-zag pattern may even be difficult to see at first.
