About Afro curly Clip In Extensions This tightly coiled hair is fun and filled with volume. It tailored to match 3c & 4c hair and is the best texture for our kinky haired loves. This hair can add styles and definitions for women who love to try out new things, or to go natural. Attach the clips securely to your hair to install them and they’ll blend seamlessly into your natural hair. Slide the clips out to remove them. No glue, tape or thread needed. Install as few or as many extensions as you’d like to make the style of your choice. How many sets do I need? 1 set for adding extra volume, 2 sets for adding volume and length. How can I distinguish the human hair from synthetic hair? The easiest way is to do burning test. Human hair burn out quickly and become ashes.