Synthetic hair is unnatural hair that is manufactured using nylon, polyester or other industrial materials. Although synthetic hair is much cheaper than human hair, it does not last nearly as long, it breaks down very easily and cannot be treated like your own hair (eg, the hair may melt if close to a hair dryer). BRIJON does not use any synthetics in its hair, and guarantees that all of its hair is 100% human Remy hair.