Familiar with the growth cycle of eyebrows is the key to drawing good eyebrows

Anyone who does tattoos knows that it is not easy to draw good eyebrows, so when you struggle to draw good eyebrows, do you think you know how eyebrows grow? To draw something well, you have to know its growth pattern. Artistic Korean semi-permanent tattoo artist realizes that many people who do tattoos do not know the growth cycle of eyebrows, so they say: the growth cycle of eyebrows is relatively short, usually 3 to 4 months, which means that as long as each eyebrow grows The hair follicles are still there and will be renewed every 3 to 4 months. The length of each eyebrow is about 0.4-1.0 cm, and its own growth and natural shedding have periodic laws. The general growth period is 150 days, the rest period is 105 days on average, and the life span is about 6 months. The growth of eyebrows: The growth of eyebrows is inseparable from the hair follicles and dermal papillae. The basal part or papillary part of each normal hair follicle has its own number of blood vessels extending into the hair bulb. These blood vessels and the blood vessels around the lower part of the hair follicle branch They communicate with each other to form a capillary network to the nipple, and the capillary network under the nipple on both sides of the hair follicle, as well as the capillary network of the connective tissue layer of the hair follicle, form a rich vascular plexus through which blood passes through. Nutrients needed for hair growth. In addition to relying on the blood circulation around the hair follicle to supply nutrients, hair growth also relies on nerve and endocrine control and regulation. The effect of endocrine on hair is obvious, and male hormones have a certain promoting effect on hair follicle sheath. Endocrine including pituitary, gonads, thyroid, adrenal and so on. Therefore, mental stress and physiological reasons can also lead to eyebrows falling off and less eyebrows. The growth and replacement of eyebrows also have a certain law, not continuous, but periodic. The hair growth cycle is divided into three stages: from the growth (ie active phase) - the resting phase - the shedding phase. The growth period of eyebrows and eyelashes is about 2 months, and the rest period can be as long as 3-9 months, after which they fall off naturally. The rate of hair growth is affected by factors such as gender, age, location and season. Such as: hair grows about 0.3-0.4 mm per day, armpit hair is 0.2-0.38 mm, and eyebrows are about 0.2 mm. Hair grows most vigorously at the age of 15-30 years, and grows slightly faster in summer than in winter.