Glossary

Hair growth goes through a regular cycle that is divided into three phases. In the anagen phase, the hair grows; it lasts about two to three years and affects about 80-90% of all hair on our body. In the catagen phase, cell production comes to a halt and the hair detaches from the papilla; this phase lasts about three weeks and affects only about 1% of our hair. Finally, the telogen phase lasts between two and four months; during this phase, the hair papilla and follicle renew themselves in about 10-20% of hairs.