Hair extensions can be made of either natural hair or synthetic fibers, but they’re mostly differentiated through their application methods.
Clip-ins are temporary extensions that you simply add to your hair whenever you like. They’re also the safest for your hair because they can be removed at the end of the day.
Just as the name says, tape-ins are hair extensions that are first taped together (smaller than clip-ins), then they’re taped to your hair, aligning to the roots. They can last from four to eight weeks.
Semi-permanent hair extensions include fusion ones, where the hair is attached to your own hair through different types of adhesives like glue. One type of technique even requires the use of a heated tool to melt the glue.
Another method of applying extensions for a longer period of time is with micro-beads or micro-rings. This means that the small extensions are applied strand by strand, at the roots.
Finally, sew-in weaves are probably the most permanent way of adding hair extensions because it can’t come off. The weave is applied by using a needle and thread to sew into braid or cornrows. They are recommended to people with thick hair, because the application method puts pressure on the scalp and it would not work on thinner hair.