Gray hair is thinner than hair with natural color because its cuticle is thinner. Your hair needs that natural protection from water, ultraviolet rays from the sun, humidity, chemicals, and heat styling. Without that barrier, your hair loses water. So your gray will feel dry, fragile, and coarse.
Gray hair grows when hydrogen peroxide builds up in your hair follicle. "This causes hair to bleach itself from the inside out," says Debra Jaliman, MD, a dermatologist in New York and spokesperson for the American Academy of Dermatology. Gray hairs are thicker and wirier, so your hair gets coarser as they multiply.
Premature graying hair and hair loss can be linked. However, one is not a sign that the other will occur. And, if both are happening, there may not be a link. In other words, it is important to look at other factors and determine what cause may be impacting your hair the most.
Background: Hair greying is an obvious sign of ageing in humans. White (nonpigmented) hair is thicker than black (pigmented) hair. The growth rate of white hair is also significantly higher than that of black hair.
“While gray hair feels coarse and rough, the structure of the strand hasn't actually changed. When those melanin-producing cells run out of steam, the hair follicles also produce less sebum (the natural oils that hydrate hair) which makes gray hair to be drier, giving it that wiry texture,” she explains.
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.
White hairs are completely void of any pigment. Specialist Trichologist Anthony Pearce said this loss of pigment occurs within the hair follicle, which is why greys tend to turn up and stay in the one spot, rather than popping up randomly each time you pluck.
A: In very general terms, the darker the hair, the thicker it is and the lower the density (hairs per area). For example, Asians have the darkest hair, the highest hair diameter and the lowest density. Scandinavian blonds have very high hair density and the fine (diameter) hair.
More Breakage
It's simple fact of life that gray hair is more fragile and finer. This is due to the cuticle being thinner, which provided a protective layer, than when your hair had pigment. So using a delicate hand when styling and avoiding hot tools is important.
Scientists don't know exactly why some people go gray early, but genes play a large role. Also, a vitamin B-12 deficiency or problems with your pituitary or thyroid gland can cause premature graying that's reversible if the problem is corrected, Benabio says.
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.
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.
“Plucking a gray hair will only get you a new gray hair in its place because there is only one hair that is able to grow per follicle. Your surrounding hairs will not turn white until their own follicles' pigment cells die.”
Yes, gray hair also grows faster and for a longer time than black hair. A study of scalp and eyebrow hair revealed that the genes responsible for producing two of the main structural proteins in hair are twice as active in white hair as in black hair.
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 mentioned, gray hair's lack of sebum can make it feel dry. To reduce further dryness, you'll want to wash it as infrequently as possible. "Washing every other day or three to four times a week can help with this," says Mazzei.
The vast majority of people with gray hair have age-related graying. However, sometimes graying hair indicates an illness, especially if it occurs at a particularly young age. Health problems that may be heralded by gray hair include: vitamin B12 deficiency.
Graying hair doesn't mean your hair will fall out, but you do need to start using specialized shampoos to help protect your strands. These include purple shampoos that prevent your gray strands from turning yellowish in tone and those that keep your hair from becoming brittle.
Choose a hue that's close to the color of your scalp. It will draw less attention to thin tresses. There's less contrast between skin and hair tones to draw the eye.
A gene variation of EDAR that arose about 30,000 years ago seems to give some people thicker strands of hair. More than 90% of Han Chinese, 70% of Japanese and Thai people, and 60% to 90% of Native Americans carry the “thick hair" version of the gene.
Caucasian hair usually appears thicker since it is more difficult to see through the scalp than other ethnic hair types. However, Asian hair is the thickest and coarsest hair of any ethnic group.
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.
"When your body stops generating melanin, hair goes gray, silver, or white and follicles produce less sebum (which is the natural oil that hydrates hair)," explains colorist and R+Co Collective member, Richy Kandasamy. "As a result, gray hair tends to be drier, which gives it that wiry, dry, and stubborn texture.
When your grays come in you might notice they look and act completely different than what you're used to. That's alright! It's normal for grays to grow in with a different curl texture. It happens because the slowed oil and melanin production in the hair affects its chemical structure.