Our hair consists of a three-layered hard protein structure. The inner layer is called the medulla, while the second layer is known as the cortex. Together, these two layers also determine our hair colour. The outer layer consists of scales that overlap like roof tiles.


Hair follicles are formed in the womb and are fully grown by the 22nd week of gestation. Our bodies are covered with 5 million of these follicles. This is the maximum number, since the body does not produce new follicles. There are approximately 90,000 follicles on a fully-haired scalp. Hair colour affects this number, with redheads having around 100,000, brunettes 110,000 and blondes 140,000.

A follicle is a tunnel-like skin component. At its base are small veins that nourish the follicle. It also has a hair muscle. When this muscle contracts, your hair stands on-end and sebum is released. This substance is produced by the sebaceous gland and is essential for keeping our hair in good condition.

Hair growth cycle

Unlike other mammals, our hair grows and falls out regardless of season. The following cycle applies to human hair growth:

  • Anagen phase:

    The active phase in which new hair roots grow. The cells at the base of the hair root multiply every 23-72 hours, which is faster than any other cell in the body. As a result, our hairs grow at a rate of 0.3 mm per day or 1 cm per month. This phase lasts for 2 to 6 years. The shorter this phase, the shorter our hair. Men’s hairs grow up to 40 – 50 cm in length, while women’s hairs reach 70-80 cm. Of course, some hairs grow even longer.

  • Catagen phase:

    The transitional phase in which hairs stop growing and prepare to fall out. Under normal circumstances, approximately 3% of our hair is in this phase, which lasts for 2-3 weeks.

  • Telogen phase:

    The resting phase that affects 6 to 8 percent of our hair and lasts for around three months. During this phase, we lose about 25-100 telogen hairs. This is necessary so that a new anagen phase can begin.


What we’ve found out about the hair growth cycle has yielded us important information. Information that we’ve used in our quest for a remedy that prevents androgen hair loss and supports normal hair growth. We’ve discovered that:

  • hair must first fall out in the telogen phase to make room for new hair. When you use hair serum, you might actually lose more hair during the initial period.
  • it can take 6 to 16 weeks for hair roots in the telogen phase to regain the strength necessary to grow through the scalp.
  • hairs grow 1 cm per month at most, so it takes time for the effects of a hair growth serum to become noticeable.
  • it is important to use the serum for 3 to 4 months non-stop before the results can be properly evaluated.