Hair needs to reach a threshold before it turns gray, Picard said. If strands are about to go gray anyway — perhaps near middle age — a stressful event might push hair cells past that threshold earlier, the study noted. Then when the stress ends and the hair is just above the threshold, it could revert back to dark.
The age at which you go gray is also determined by your genetics. So, if you have a parent who went gray early, then it's likely you will too. It's not possible to reverse or treat gray hair.
According to a research group at Columbia University if the grey hair was brought on by a stressful event it can go back to its original hair color if that stress is removed from the person's life.
And while it may seem intuitive that stress can accelerate graying, the researchers were surprised to discover that hair color can be restored when stress is eliminated, a finding that contrasts with a recent study in mice that suggested that stressed-induced gray hairs are permanent.
For those of you who have plucked those pesky gray hairs from your head, you don't have to fear that they are coming back with a vengeance. The idea that pulling a gray hair will cause 10 more to grow in its place is simply not true.
Vitamins B6 and B12 have also been proven to boost melanin production. Goddard says that vitamin B6, also known as pyridoxine, has been found to trigger the production of enzymes and chemical reactions that boost the metabolism of the hair proteins (keratin and melanin) in the hair follicles.
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.
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.
It's most common for graying to begin in your 30s, though some people spot a few grays in their 20s. If you think you're going gray unusually early, there are a number of possible reasons why. Smoking, for one, has been linked to the early onset of gray hair.
It can be a shock to find your first gray hairs on your head, especially if you're only in your 20s. But women's expert Dr. Kirtly Parker Jones says a few gray hairs is perfectly normal, even for women in their late 20s and early 30s. However, stress, genetics and other factors can play a role.
Vitamin B-12 deficiency is one of the most common causes of prematurely graying hair. Researchers have noted that vitamin B-12 deficiencies are often concurrent with folic acid and biotin deficiencies in people whose hair has started to turn gray early.
It turns out that, among people who are nutrient deficient, supplementing with vitamin B-5, high-dose para-aminobenzoic acid, iron, or vitamin B-12 might help reverse gray hair.
Only one hair grows per follicle. When your strand turns gray or white, the pigment cells in that follicle have already died. 1 "In other words, plucking a gray hair will only get you a new gray hair in its place," says Gillen, so any plucking is pretty much pointless. You're simply delaying the inevitable.
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.
Stress can cause hair to gray prematurely by affecting the stem cells that are responsible for regenerating hair pigment.
Typically, white people start going gray in their mid-30s, Asians in their late 30s, and African-Americans in their mid-40s. Half of all people have a significant amount of gray hair by the time they turn 50.
Your hair follicles produce less color as they age, so when hair goes through its natural cycle of dying and being regenerated, it's more likely to grow in as gray beginning after age 35. Genetics can play a role in when this starts.
Grey hair and genetics
The average age for grey hair varies greatly, and one of the main causes of grey hair in your 20s is genetics. The age at which a person's hair turns grey is influenced by the IRF4 gene, and one specific variant (rs12203592) is a marker for premature greying.
According to one study, endurance exercise may help tackle both hair loss and greying, and extend lifespan by years.
Studies have identified a number of factors that also may speed up gray hair, including smoking, diet, stress and genetics.
Normally, an enzyme called catalase breaks down the hydrogen peroxide into water and oxygen. However, as you get older, you produce lower amounts of catalase, which allows the hydrogen peroxide to build up. This buildup can damage the pigment-producing cells, leading to gray or white hairs.
BEST EYEBROW PENCILS FOR GRAY HAIR
If you prefer darker brows, consider trying dark brown, black-brown, taupe, or dark gray shades. If you prefer lighter brows, consider trying light brown, dark blonde, or light gray shades.
Don't go crazy plucking grey hairs. If you have thinning brows, you want to keep all the hairs you can. Plucking the hair just removes the grey temporarily until another grey hair grows back in its place. If you're plagued by bushy brows, brush or comb hairs upwards and carefully trim above the brow line only.
"Even if the hair on your head is silver or gray hair, I suggest dyeing brows light brown," says Petrescu.
It is natural to lose melanin as you age, however, there are also a number of other reasons that might cause loss of melanin. However, it is not possible to restore your hair's natural colour if your greying is genetic and natural.