Type 4a

It consists of tightly coiled hair that has an 'S' shape. It has more moisture than type 4b curls and has a visible curl pattern. The circumference of the spirals is close to that of a crochet hook. The main difference between 3c and 4a hair is that 4a hair requires a significant amount of moisture and greatly benefits from additional hydration. This may mean extra deep conditioning or styling the hair with protective styles to keep moisture locked in the strands.
For those with type 4 curls, it is recommended to use a creamy leave-in to try to maximize moisture protection. A curl defining cream or a gel that can safely stretch the curl for twist-outs and braid-outs.
Type 4b

With type 4b hair, the strands have a 'Z' shape and less defined curl pattern. Instead of curling or coiling, the hair bends at sharp angles like the letter 'Z'. Type 4b hair is tightly coiled and may feel wiry to the touch.
Choose products that contain argan oil, which is rich in vitamins and antioxidants that will truly hydrate and restore life to dry, brittle strands.
Type 4c

The hair consists of strands that almost never form without the use of styling techniques. Type 4c hair can range from fine, thin, and soft to thick with dense, coiled strands. This is the hair type that requires the heaviest moisture butters.