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HAIR ARTICLE ISSUED BY BEAUETECK UNISEX SALON & SPA COIMBAORE.

Hair is a filamentous biomaterial that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types and hair care, but hair is also an important biomaterial primarily composed of protein, notably keratin. Attitudes towards hair, such as hairstyles and hair removal, vary widely across different cultures and historical periods, but it is often used to indicate a person’s personal beliefs or social position, such as their age, gender, or religion.

Hair Growth beaueteck family salon & spa

Hair Growth The two main types of hair found on the body are vellus hair and terminal hair

Vellus hair (VEL-us HAYR), also known as lanugo hair, is short, fine, unpigmented, and downy hair that appears on the body. Vellus hair almost never has a medulla. It is commonly found on infants and can be present on children until puberty. On adults, vellus hair is usually found in places that are normally considered hairless (forehead, eyelids, and bald scalp), as well as nearly all other areas of the body, except the palms of the hands and the soles of the feet. Women normally retain 55 percent more vellus hair than men. Vellus hair helps with the evaporation of perspiration.

Terminal hair (TUR-mih-nul HAYR) is the long, coarse, pigmented hair found on the scalp, legs, arms, and bodies of males and females. Terminal hair is coarser than vellus hair, and, with the exception of gray hair, it is pigmented. It usually has a medulla.

Hormonal changes during puberty cause some areas of fine vellus hair to be replaced with thicker terminal hair. All hair follicles are capable of producing either vellus or terminal hair, depending on genetics, age, and hormones.

Growth Cycles of Hair expalained by beaueteck hair salon & spa coimbaore

Hair growth occurs in cycles. Each complete cycle has three phases that are repeated over and over again throughout life. The three phases are anagen, catagen, and telogen

  1. During the anagen phase (AN-uh-jen FAYZ), also known as growth phase, new hair is produced. New cells are actively manufactured in the hair follicle. During this phase, hair cells are produced faster than any other normal cell in the human body. The average growth of healthy scalp hair is about ½ (0.5) inch (1.25 centimeters) per month. The rate of growth varies on different parts of the body, between sexes, and with age. Scalp hair grows faster on women than on men. Scalp hair grows rapidly between the ages of 15 and 30, but slows down sharply after the age of 50.
    About 90 percent of scalp hair is growing in the anagen phase at any time. The anagen phase generally lasts from three to five years, but in some cases, it can last as long as 10 years. The longer the anagen cycle is, the longer the hair is able to grow. This is why some people can only grow their hair down to their shoulders, while others can grow it down to the floor!
  2. The catagen phase (KAT-uh-jen FAYZ) is the brief transition period between the growth and resting phases of a hair follicle. It signals the end of the anagen phase. During the catagen phase, the follicle canal shrinks and detaches from the dermal papilla. The hair bulb disappears and the shrunken root end forms a rounded club. Less than one percent of scalp hair is in the catagen phase at any time. The catagen phase is very short, lasting from one to two weeks.
  3. The telogen phase (TEL-uh-jen FAYZ), also known as resting phase, is the final phase in the hair cycle and lasts until the fully grown hair is shed. The hair is either shed during the telogen phase or remains in place until the next anagen phase, when the new hair growing in pushes it out. About 10 percent of scalp hair is in the telogen phase at any one time.
    The telogen phase lasts for approximately three to six months. As soon as the telogen phase ends, the hair returns to the anagen phase and begins the entire cycle again. On average, the entire growth cycle repeats itself once every four to five years.

Hair Growth Patterns

It is important when shaping and styling hair to consider the hair’s growth patterns. Hair follicles usually do not grow out of the head at a perpendicular, 90-degree angle or in a straight direction out from the head. When they do, these growth patterns result in hair streams, whorls, and cowlicks.

Hair growth patterns will be more fully discussed later in this chapter in the Hair Analysis section.

The Truth about Hair Growth

As a stylist, you may hear opinions about hair growth from your clients or from other stylists. Here are some myths and facts about hair growth:

Myth. Shaving, clipping, and cutting the hair on the head makes it grow back faster, darker, and coarser.

Fact. Shaving or cutting the hair on the head has no effect on hair growth. When hair is blunt cut to the same length, it grows back more evenly. Although it may seem to grow back faster, darker, and coarser, shaving or cutting hair on the head has no effect on hair growth.

Myth. Scalp massage increases hair growth.

Fact. Scalp massages are very stimulating to the scalp and can increase blood circulation, relax the nerves in the scalp, and tighten the scalp muscles. However, it has not been scientifically proven that any type of stimulation or scalp massage increases hair growth. Minoxidil and finasteride are the only treatments that have been scientifically proven to increase hair growth and are approved for that purpose by the Food and Drug Administration (FDA). Products that claim to increase hair growth are regulated as drugs and are not cosmetics.

Myth. Gray hair is coarser and more resistant than pigmented hair.

Fact. Other than the lack of pigment, gray hair is exactly the same as pigmented hair. Although gray hair may be resistant, it is not resistant simply because it is gray. Pigmented hair on the same person’s head is just as resistant as the gray hair. Gray hair is simply more noticeable than pigmented hair.

Myth. The amount of natural curl is always determined by racial background.

Fact. Anyone of any race, or mixed race, can have hair from straight to extremely curly. It is also true that within races, individuals have hair with varying degrees of curl in different areas of the head.

Myth. Hair with a round cross-section is straight, hair with an oval cross-section is wavy, and hair with a flattened cross-section is curly.

Fact. In general, cross-sections of straight hair are often round, cross-sections of wavy and curly hair tend to be more oval to flattened oval, and crosssections of extremely curly hair have a flattened cross-section. However, crosssections of hair can be almost any shape, and the shape of the cross-section does not always relate to the amount of curl or the shape of the follicle.