Hair extensions are additional strands of hair that are attached to a person's natural hair to add length, volume, or desired style. They are commonly used to enhance the appearance of one's hair by adding extra length or thickness. Hair extensions can be made from various types of hair, as mentioned earlier, such as human hair or synthetic hair. The process of attaching hair extensions to natural hair can be done using different methods, including best beauty hair clip-in extensions, tape-in extensions, sew-in or weave extensions, fusion or bonded extensions, micro-link or micro-bead extensions, and halo extensions, among others. The choice of method depends on factors such as personal preference, hair type, desired results, and budget.