Healthy human hair
- Hair life cycle: 2- 5 years.
- Hair loss: 100-300 hairs per day
- Hair density: 180- 330 hairs per 1cm2.
- Speed of hair growth: about 1 cm per month.
Hair grows from hair follicle. Hair follows a specific growth cycle with three distinct phases.
- Growing phase – anagen, it lasts 3-7 years, includes cca 80 % of hair
- Temporary phase – catagen, hair stops growing, it lasts several weeks, 1 % of hair
- Falling out phase – telogen, it lasts 3 months, cca 20 % of hair