Viss IPL, Руководство пользователя

Страница: 16 / 37

12
4.1 Hair growth
Depending on age, metabolism and other factors, everyone’s hair
grows differently, but hair normally grows in three phases:
1.
Anagen phase (growing phase)
The hair grows actively from the root. In this phase the
concentration of melanin is highest. Melanin is responsible for
the pigmentation of the hair. The more melanin there is in the
root, the darker the hair is. Melanin concentration is also the
determining factor for the efficacy of this method. Only hairs in
the anagen phase are susceptible to treatment with light.
2.
Catagen phase (degradation phase)
The hair growth stops and the root shrinks before the hair sheds.
3.
Telogen phase (resting phase)
The old hair separates from the root and sheds. The root remains
at rest until the biological clock tells it to become active again and
grow a new hair. Hairs on an area of skin are usually in different
stages of the cycle of hair growth.