Understand how your hair is formed: From the roots to the end

The hair needs constant care and moisturizing, but you know why? The hair fiber, or any wire length, is divided into three parts with different functions that, together, leave your beautiful and healthy hair. The treatments work to correct problems caused by chemical and external agents such as pollution, and ensure that the cuticle, the cortex and the medulla function properly.

CUTICLE: LAYER MORE FOREIGN LEAVING THE WIRES HYDRATED
Who ever heard of that particular product need to close the scales to have greater effect, or the hot air jet opens the cuticles and the cold air is important to close them? The cuticle is the outermost layer, responsible for regulating the inflow and outflow of water from the fiber. It is, for example, the coloration is deposited.

It is composed of six to eight layers of flat cells overlapped and covered with an invisible layer of lipids resistant to water, which acts as a natural moisturizer. Most hair damage happens in this area of ​​the wires, which thanks to external damage, break the protective cuticle and cause fall, porosity and dryness.

CORTEX: WAY RESPONSIBLE FOR, COLOR AND STRENGTH
The cortex is the most important region of the wire and is responsible for defining the shape, color, strength, elasticity, natural amount of moisture of the yarn and the strength. "It is in this area that proteins are grouped in parallel giving resistance to the wire," taught dermatologist Sara Bragança in an interview with "woman bag".

These proteins are grouped into rods formed of keratin, important to avoid falls and double-ended, and melanin, which gives color to the hair. In the cortex is also defined texture of the hair, whether it is straight or curly, which also depends on the chemical bonds such as disulfide bridges responsible for wire format in addition to join the proteins found in the hair shaft.

The higher the number of links, more frizzy hair and are more difficult for the natural oiliness of the scalp to get the horns, needing products to meet this function. As the cortex is an innermost layer of the cuticle, the damage that area tend to be more severe leaving the most fragile hair and in some cases, only the scissors is the solution.

CORD: THIS JUST IN SOME HAIR TYPES
The hair is still formed by the cord in the innermost layer. "While it may be absent in some patients, its function is to direct the new strand of hair and aid in thermoregulation. The spinal canal may be empty or filled with keratin" explained Sara Bragança.

The medulla is the only part of the hair fiber that is in contact with the bulb and is only found in the thicker wires or whites. She is responsible for distributing minerals and nutrients to the tips; allowing the cells which are created in the bulb and make hair grow, are brought to the ends.