However, it is not possible to restore your hair's colour, unlike what most claims on the internet might tell you. Your hair follicles cannot produce melanin on their own.
Pigment cells do not come back. Once hair turns grey or white, it is not ever going to turn back into brown, red, or black, or whatever your natural color was.
No product is going to reverse your body's production of melanin. Otherwise there would probably be technology to change your skin color and eye color as well. Best you can do is cover it or shave it.
Using the right hair care products will go a long way to increase melanin for your hair. Tip: You should add Vitamins A, B12, C, and D to increase melanin production in your hair cells. You should thus add citrus fruits and green vegetables to your diet.
Nonetheless, recent research has revealed that restoring the color of a single gray hair to its original pigmentation is a general phenomenon regardless of age, gender, ethnicity, and corporeal regions but only appears in a single anagen of rare HFs 5.
There are certain health conditions and lifestyle factors (like smoking and stress) that could contribute to going gray earlier. As of now, there are no effective treatments that can reverse or prevent gray hair.
Similarly, if oxidative stress is leading to grey hair, including antioxidant-rich foods in your diet can restore your original hair color. Cutting down on smoking, reducing stress, and avoiding the use of harsh chemicals on the hair help reverse grey hair naturally. Grey hair caused by genetics cannot be reversed.
Hair follicles are structures in the skin that make and grow hair. With aging, the follicles make less melanin, and this causes gray hair. Graying often begins in the 30s. Scalp hair often starts graying at the temples and extends to the top of the scalp.
Very few studies have shown that melanin production can be increased in the human body. One small clinical trial suggests that a prescription medication called nitisinone may help increase melanin in people with a rare disease that causes pale skin and hair and poor vision.
Premature graying may be reversed with vitamin B12 supplementation only if vitamin B12 deficiency is the cause. If you are graying due to other factors, such as genetics, zinc deficiency, and medications, your gray hair cannot be reversed.
Gray Hair Can Return to Its Original Color—and Stress Is Involved, of Course. Few harbingers of old age are clearer than the sight of gray hair. As we grow older, black, brown, blonde or red strands lose their youthful hue.
Aging decreases the synthesis of melanin, which is the pigment that gives hair its natural color. Free radicals can accelerate this process, leading to premature gray hair. Since collagen has antioxidant properties that can combat free radicals, increasing your collagen intake may help prevent or slow down graying.
Melanin is what gives your hair (and skin) its natural color. People of African descent, Thai, and Chinese people, go grey more slowly.
Vitamin A, C and B12 are the most needed vitamins to increase the melanin production in your hair. Add citrus fruits like oranges, grapes, pineapple, and melon to your diet. Also eat vegetables like potatoes, carrots, beans, etc. Non vegetarians can try adding red meat, chicken liver, fish, and eggs to their diet.
Various diet shifts can result in the production of melanin, by following the diet mentioned above. However, you can use some products to control hair greying and dryness. Look for hair oil enriched with Bhringraj, Triphala, and Vibhitaka, which are best known for preventing premature hair greying and dryness.
A review of research suggests that proper supplementation may reverse premature graying in those who are deficient in certain nutrients, including iron, vitamin D, and vitamin B12.
The average age of onset of hair graying appears to be mid- to late forties; however, this varies with race, with the average age for Caucasians being mid-thirties, that for Asians being late thirties, and that for Africans being mid-forties.
Grow out your hair
Growing your hair out is both the most effective and least damaging way to return to your natural color (though, depending on how quickly your hair grows, can take some time).