Why does hair on different parts of the body grow differently?
The hair on some body parts never seems to grow, like the hair on the upper part of the finger, the hand, the arm. Is it just not growing, or it is falling out and regrowing and we just don't notice? The hair on your head and your face (atleast, men's facial hair) would grow to be endessly long if it were never cut, but how long would leg hair grow if women never shaved? Most men don't shave their legs, backs, and chest, and that hair isn't the length of the hair on their head if they'd never cut it. So what's the difference?
Why does hair on your head grow at a different rate than body hair?
Don’t worry, your hair doesn’t have a mind of its own — not literally, anyway. Hair on the head is different from hair on other parts of the body (more on that in a minute), but it actually all grows out to a specific length. It’s thought that these lengths are largely determined by your genes.First, here’s how hair growth works: All hair and fur grows in cycles. In the anagen phase, a protein root down in your hair follicle starts accumulating cells that form into a rope-like structure we know as hair. Your scalp’s blood supply feeds the follicle and allows it to divide into more cells. As long as the anagen phase lasts, your hair will grow longer and longer, unless you cut or break it, at a rate of about a half-inch each month.
Why does hair on different parts of the body have a different look and texture? Is this different determined by DNA and genetics, or is it due to products like shampoo and conditioner?
In short, no.These are different types of hair.It's more easy to see in a dog--the hair on all dogs' ears is much much softer than the hair anywhere else on their body. It's not a matter of anything you can do from the outside.
Why is body hair different from head hair?
Human hair comes in two basic types: terminal hair, which grows on the scalp, eyebrows and eyelashes, and vellus hair, which is found everywhere else. Beyond that, the main difference between hair types is how long they grow for before the follicle runs out of steam. This is what determines their length and thickness.Hair follicles go through cycles of growth and dormancy. During the growth phase the hair grows continuously at about 0.4 millimetres per day, getting longer and thicker in the process. But at some point the hair-producing cells die off and growth stops. The hair falls out and the follicle goes dormant for around six months before sprouting new hair-producing cells and entering a new growth phase.The length of the growth phase is controlled by hormones. Leg hairs grow for about two months, which is why they are short and fine. Armpit hairs make it to six months, but head hairs grow non-stop for six years or more. That means head hair can theoretically grow to almost a metre in length.Human hair is decidedly unique. Most of our body hair is so wispy and short as to be almost invisible, though in some places it is coarse and curly. Our head hair is almost uniquely long and flamboyant. We are pretty much the only animal to have hair that grows continuously for many years, and also to suffer the indignity of going bald.
Why is my beard differently colored from the hair on my head (or even multicolored in itself)?
If you have ever observed some different colored hair in your facial hair, especially in the scalp hair or in the beard, so take it easy. It is normal and you have done have any medical anomaly.In fact, you should also know that it’s quite natural for body hair to grow in a different shades and colors than the locks on your head. Despite these clear differences might seem illogical, but there’s a proper science behind them. The pigmentation level in your natural hair follicles and hair grafts ultimately determines your actual hair color. Each hair follicle contains a range of eumelanin pigments (causes black or brown shades) or a unique pheomelanin pigments (causes red and yellow shades). Guys with high levels of crucial yellow pheomelanin pigments and low levels of natural brown eumelanin end up with blonde hair. So, different combinations of pigments in each hair follicle determine different hair colors of hair and beard and these combinations explains those random dark patches and red hair or multi-colored beard. So if you have multi-colored hair on the head, then don’t worry. It is 100% normal and safe.Besides the natural pigment development, severe stress, depression, and malnutrition can easily change your natural hair color. If you have gray hair on the head, then it is the primary sign of stress, while dull, dry, and lackluster hair can indicate that you have a vitamin deficiency. But, the major reason of changing the hair color of your beard is harmful sun exposure. Overexposure of sun rays may lighten your hair color, but it will eventually weaken it in the process. You must use an SPF included shampoo and conditioner. It will keep your natural hair color safe. Try to massage your hair twice a week. It will give extra nourishment and shine to the hair.source: All About Hair Care.
Do different parts of your head hair grow at different rates?
wow your side burns grow faster. i wish mines did. i would then be able to do a lot of those cool asian hairstyles but my sideburns grow very slowly that i end up having to use the hear above my side burns as side burns instead since they usually over lap the actual sideburns.
Why do people's hair grow at different rates?
So you’re asking one of two things:Why does one person’s hair grow faster than another person’s hair?Why do some hairs on my head seem to grow faster than other hairs on my head?In regard to question 1. : The short answer is that people are different. One of my clients is growing her hair out. She still has to come every 8 weeks for me to thin it out. To put it in perspective - most of my clients get their hair thinned out maybe once or twice a year. Not this girl. Her hair refuses to acknowledge that it has been cut for more than a few weeks. Each time I see her, her hair is just as thick and the pile on the floor post-cut could make wigs for at least 5 people. The average for hair growth is about 1/2 in. a month.In regard to question 2: It’s not uncommon for me to hear a client say, “it really feels like the back of my hair is growing a lot faster than the top.” I don’t laugh or roll my eyes, because that’s an understandable illusion when you think about the shape of the head. Hair on top of the head has a lot more curve to grow over than hair at the nape. Hair at the nape just drops down a few inches and it’s on your shoulders, while hair at the top of the head travels slightly out before it travels down.Another reason might be that hair around the face is typically much finer than hair anywhere else on the head. We also mess with the hair around our faces a lot more. These two factors can lead to breakage of the hair around the face giving the impression that it grows slower than hair in other regions.
Is human head hair genetically different between boys and girls?
Head hair is hair, no matter your gender. It is made from the same genes on the chromosomes.Many people let their hair grow. Many people cut their hair. Gender has nothing to do with it.Hair cells on the rest of the body are affected by sex hormones. The hair genes and the cells are the same, but the body's ability to make sex hormones might change the hair structure.And if you have the genes for male pattern baldness, in combination with high levels of testosterone, the head hair cells is affected by that.