The less melanin you have, the lighter your hair color. Gray hair has minimal melanin, while white has none. As you age, it's natural to lose melanin in your hair. In fact, it's estimated that the odds of your hair turning gray increase up to 20 percent each decade after you hit your 30s.
The pigment in our hair is caused by melanin— the same pigment that is also responsible for our skin color. Gray hair is caused by a loss in melanin, whereas white hair does not have any melanin at all. As you age, your hair produces less and less melanin that leads your hair to appear gray, and then eventually white.
As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent color — like gray, silver, or white — as it grows.
Regular use of natural remedies may slow down and possibly reverse white hair. But everyone's hair eventually starts to turn white, and the individual has to decide whether they are comfortable with the white or if they prefer to try and hold back what is a natural aging process.
The primary — and most scientifically-sound — reason for gray hair is in your genes. This is especially true if you go gray before 20 years old, which is referred to as premature graying. If your parents developed gray hair at a young age, chances are you will, too — and there's not much you can do about it.
Blonds get white hair just like brunets, but some blondes only appear to get a lighter blond while others experience their blonde hairs getting darker and duller as the white hairs begin to appear. Still, blondes can, over time, have a full head of white hair.
Science of Grays
Your hair follicles have pigment cells that make melanin, a chemical that gives your hair its color. As you age, these cells start to die. Without pigment, new hair strands grow in lighter and take on various shades of gray, silver, and eventually white.
Typically, white people start going gray in their mid-30s, Asians in their late 30s, and Blacks in their mid-40s. Half of all people have a significant amount of gray hair by the time they turn 50.
Despite the claims made online and by product marketers, it's not possible to reverse white hair if the cause is genetic. Once your hair follicles lose melanin, they can't produce it on their own. As melanin production slows, your hair turns gray, and then white when melanin production has completely stopped.
Naturally-occurring blond hair is primarily found in people living in or descended from people who lived in the northern half of Europe, and may have evolved alongside the development of light skin that enables more efficient synthesis of vitamin D, due to northern Europe's lower levels of sunlight.
Your makeup plays a big role in when (or if) you develop white hair. If you notice white hair at an early age, it's likely that your parents or grandparents also had graying or white hair at an early age. You can't change genetics.
Redheads probably won't go grey. That's because the pigment just fades over time. So they will probably go blonde and even white, but not grey.
So, he says, "Follow healthy hair habits. Try to avoid repetitive use of heat and chemical treatments which can damage the hair and the pigment cells. Limit exposure to, or protect hair from, toxins and pollutants, and when possible, protect your hair from the sun by covering it up with a hat or scarf."
It can be inherited from either parent. The color of our hair is determined by the form of hair pigment that we have. The pigment is actually produced along the hair shaft, and there are two main forms of hair pigment. There's eumelanin and pheomelanin.
Just like the hair on the head, the hair on the rest of the body, including the pubic area, is subject to graying. As people age, their skin produces less melanin. Melanin is the pigment responsible for giving skin and hair its color.
Your hair turns gray or white from a loss of melanin, a pigment-producing component that produces melanocyte cells. These make up your natural hair and skin color. The less melanin you have, the lighter your hair color. Gray hair has minimal melanin, while white has none.
A new study shows that stress really can give you gray hair. Researchers found that the body's fight-or-flight response plays a key role in turning hair gray. Your hair color is determined by pigment-producing cells called melanocytes.
People use “gray,” “white” and “silver” interchangeably to describe hair that is turning or has turned. Its appearance — whether it looks, gray, white or silver — depends on how much natural color, or pigment, remains, experts say. Hair that has lost all its color typically appears white.
Harvard researchers have found that acute stress hyper-activates the sympathetic nervous system, which rapidly depletes the stem cells and leads to hair graying. (Image: Hsu Laboratory, Harvard University.)
Although the primary cause of premature hair graying (PHG) is considered to be genetic, certain environmental factors also play a role. Trace element deficiencies such as Vitamin B12, Vitamin D3, and calcium may also be associated with PHG.
Your hair doesn't turn gray — it grows that way.
A single hair grows for one to three years, then you shed it — and grow a new one. As you age, your new hairs are more likely to be white. "Every time the hair regenerates, you have to re-form these pigment-forming cells, and they wear out," says Oro.
Genetic or age related greying of hair cannot be reversed. However, greying related to diet, pollution, bleaching and stress can be slowed down with a balanced diet and a good hair care regimen.
Gray hair is one of the universal signs of advanced age. More likely than not, at some point in your life, your hair will start to go gray. Some individuals can maintain hair color well into their older age, but most do not.
Just like one finds grey hairs on the head upon ageing, appearance of grey hair on the eyebrows is also a sign of ageing/premature ageing. While for some, these signs start showing up in the 40's or 50's, some folks encounter the problem of grey hair on eyebrows in their 30's.