Type 4C hair
The most tightly coiled hair type, with little visible curl pattern and the most shrinkage.
Also: 4C
4C is the tightest pattern in the typing system. The coils are so small and close that the hair can look like a dense cloud with no clear curl, and it may shrink to less than a quarter of its stretched length. It needs moisture and gentle handling, often finger detangling. For a long time 4C hair was left out of beauty imagery and school rules, and the natural hair movement has worked to show it worn openly, as an afro, puff, twists or braids.