Life Cycle of Hair
Anagen - Active Growth Phase
- Growing Cycle
- Stays growing for 2 to 6 years
Catagen - Transition Phase
- Intermediate cycle
- This phase lasts for about 2-3 weeks
Telogen - Resting Phase
- Resting/shedding cycle
- Lasts for about 3 months
Returns back to Anagen
- Active Growth Phase and begins a new cycle
Why Does Hair Get Thinner?
- The degree of thinning that an individual experiences can vary due to both external factors and internal factors. Examples of external factors would be stress, exposure to free radicals and UV rays. Examples of internal factors would be genetics and follicle sensitivity to the hormone Dihydrotestosterone, or D.H.T.
- Androgenetic Alopecia, or "pattern baldness", occurs in both men & women whose hair follicles are sensitive to D.H.T. (a primary cause of thinning hair & hair loss).
- Typically, hair on the top and front of the head is most sensitive to D.H.T. Over time, this hair will become weaker, finer, & may eventually stop growing.