VISIT WEBSITE >>>>> http://gg.gg/y83ws?3719477 <<<<<<
The four types 1, 2, 3, and 4 go from the straightest hair to the curliest form. Within each one of those groups are subtypes, a-c. The structure that determines the texture is a little part of the scalp called the follicle. Generally, there are two parts of hair: the shaft is the part we see and the follicle is the part that exists below the skin.
Starting with the part we see, the shaft is dead. It is made up of proteins called keratin. The shaft is separated into three layers: the medulla innermost layer , the cortex the middle layer , and the cuticle the outermost layer. The cuticle is what most hair care products target. If the shaft is made up of keratin what separates the different layers or is the separation ambiguous? Next, we have the follicle. The follicle is the living part of the hair which consists of two smaller structures: the papilla and the germinal matrix.
The papilla is at the base of the follicle and contains the blood vessels, capillaries, to nourish its cells. The germinal matrix is where new hair cells are produced. Surrounding the papilla and germinal matrix is the bulb which has many different types of stem cells. I wonder if anyone has attempted to utilize these stem cells for other purposes. Surrounding the follicle are the inner and outer sheaths that protect and mold the growing hair shaft.
Attached to the outer sheath is the arrector pili which is what causes hair to stand up when frightened. Again, the follicle is the part of the hair that determines hair structure.
The cross-sectional shape of the hair determines its texture. The more circular the hair follicle, the straighter the hair is. The flatter the follicle, the curlier hair is. Also, the circular follicle allows more sebum to travel down the hair than a flatter shaft, giving it a shinier look. Morphologically, the hair follicle of those with curly hair is elliptical in cross-section and the follicle is an asymmetrical S shape, Eurasians have straighter hair shafts and symmetrical hair follicles, straight, and thick hair shafts are common to East Asians.
Another interesting piece of information, it is thought that the similar curly hair structure commonly found in Sub-Saharan Africans and Melanesians evolved convergently [1]. These two groups of people existed independently of one another, but still evolved to have the same hair type, further supporting that there is a useful function of this hair type.
Given that there are different types of hair textures, we would expect there to be different effects on the bearers. Throughout the animal kingdom, common uses for hair include heat insulation, protection, communication, and mating. Can I color, tone, or bleach extensions? How do I care for my hair extensions? Which countries do you ship to? Do I have to pay taxes, customs or duties? Do you have package insurance? How much does shipping cost?
What is the purpose of the tester weft? How do I initiate a return or exchange? Is return shipping free? My tracking stopped updating? How do I change or cancel my order? FAQs Do you have any sample swatches? How do I redeem my points? Do you offer any payment plans? How can I refer a friend? Luxy Hair Color Guide. Help Me Choose Quiz. All About Extensions. But not for long, checkout before it sells out. Hair texture change: why it happens While changes in hair texture can be unnerving, the most important thing to note is that you are not alone.
Genetics and hereditary traits Genes play a large role in determining how much our hair will thin as we age. Hormone changes Hormones have a big impact on your hair.
Fighting texture changes Noticing that your hair is becoming thinner? Fringe Is In Bangs are having a total moment right now. Beautiful hair, at any age The relationship you have with your mane is a lifelong journey. Written by: Mikayla Uber. Posted by Guest Writer. Quiz: which hair extensions are for me? Asian hair Asian hair is usually straight and either dark brown or black in color. Caucasian hair Caucasian hair can be straight, wavy or curly.
African hair African hair is generally characterized by tight curls and kinks, and grows almost parallel to the scalp. African hair has a much higher density than Asian hair. Thread: Different textures on the same head? February 1st, , PM 1. Different textures on the same head? I've got different texture hairs on my head. Some are fine and straight, some are medium and straight, some are fine and wavy, while some are medium and wavy. Does it mean anything to have so many different textures on my head?
My health is okay, so it can't be a sign of illness, or can it? Do you have different textures on your head? How many. February 1st, , PM 2. Re: Different textures on the same head? I've always had 2 textures- fine straight hair, about 1a-b, on most of my head, yet fine curly hair, about 3a with ringlets around the hairline.
I think it's fairly normal, as I know quite a few people like this. February 1st, , PM 3. I do not think it is a sign of illness but rather a sign of your genetics. My hair is not all the same.
Комментарии