What do you Call it! Weaving Extension, Sew In Extension, Fusion Extension, Tape In Extension, Skin Weft Extension, Pinch Braids Extension, Tree Braids Extension, Brazilian Knot Extension etc. Here is what Bonita’s Says! If your natural hair is Fine or Short and you are looking for Volume and Length, hair extensions will be a great Alternative to consider. It will provide you with a full voluptuous vibrant looking hair. Hair extensions methods are safe for the natural hair. The process is done through Braiding, Sewing and Hot tools methods which is very safe on all types of hair.