There are several different black hair curl types, and knowing which ones yours are can help you choose the perfect styling solution. Here is a brief explanation of each of them. The 3C hair type is tight, wavy, and fragile and bends in sharp angles. It is also the most common of all types. When you stretch it out, it forms an “S” pattern. The less defined Type 4B curls look like a zigzag when bent. If you have type 4B hair, you may want to try applying castor oil or coconut oil before you wash that.