Bamboo extract is made up of around 70% silica, an essential component of hyaluronic acid. Hyaluronic acid is a structure made up of repeating disaccharide units that uses silica as a biological cross-linking agent.
Hyaluronic acid is formed in the plasma membrane and can be very large with 20,000 disaccharide components.
High levels of hyaluronic acid help to prevent moisture loss from the dermis. It is also critical for the collagen structure, acting as a glue to maintain strength and flexibility.
Hyaluronic acid provides an open hydrated matrix, directed migration and control of related cell mechanisms are mediated via the specific cell interaction between hyaluronic acid and cell surface hyaluronic acid receptors.
Silica functions as the only cross-linking agent that can bind units of hyaluronic acid together to form hyaluronic acid of a higher molecular weight. High hyaluronic acid content is frequently seen in areas of proliferation and migration with hyaluronic acid opening the space for cell growth and expansion and the creation of hydrated pathways .
In the hair follicle, this translates to high hyaluronic acid content contributing to increased multiplication of keratin cells and the supported migration and maturation of keratin cells which keep the cell in anagen (growth) phase.
Low levels of hyaluronic acid induce premature termination of the hair growth cycle and keratin cells enter telogen (resting) phase much earlier. When hyaluronic acid in the dermis and epidermis is low, hair will feel dry (coarse) and the hair matrix will be thin or brittle.
Hyaluronic acid, like the keratin cells of the hair follicle, is vulnerable to oxidative degradation.