velluskarvoihin

Velluskarvoihin refers to the fine, short, and lightly pigmented hair that covers most of the human body. It is distinct from terminal hair, which is thicker, longer, and more darkly pigmented, such as scalp hair, eyebrows, and pubic hair. Vellus hairs are typically present from birth and are often referred to as "peach fuzz." They play a role in thermoregulation by helping to trap a thin layer of air close to the skin, which can provide insulation. Vellus hair follicles are generally not connected to sebaceous glands, meaning they do not produce significant amounts of oil.

The growth cycle of vellus hair is shorter than that of terminal hair. During puberty, hormonal changes, particularly the increase in androgens, can cause some vellus hairs to transform into terminal hairs in specific areas, leading to the development of secondary sexual characteristics. However, in many areas of the body, vellus hair remains throughout life. Factors such as genetics, age, and hormonal status can influence the density and prominence of vellus hair. In some medical conditions, a change in vellus hair growth patterns can be an indicator.