In today’s time, urban and stressful lifestyles have increased the number of people experiencing premature hair greying, which is not aesthetically acceptable to anyone. However, some people do feel happy to have grey hair as they start to think of themselves as mature and full of wisdom while many people, who are in their early 20s and 30s, take grey hair as a nightmare as they feel that they look older than their actual age. The latter group of people get embarrassed with the appearance of multiple white or silver streaks on their scalp and usually wish to remove or conceal their grey hair to restore their youthful appearance.
Ever thought about what results in premature hair greying? Well, naturally, hair goes through a cycle of dying and then getting regenerated. With advancing age and because of normal oxidative and physical damage, the melanin-producing cells (melanocytes) along with their stem cells produced less. As melanin found at the base of the hair is responsible for natural hair color, fewer melanocytes result in reduced hair pigmentation and eventually the appearance of grey or white hair. The causative factors of hair greying among teenagers are vitamin deficiency, stressed thyroid gland, smoking, genetics, and various medical conditions such as anemia and autoimmune diseases.
So, wish to darken your grey hair? There are multiple foolproof home remedies to naturally prevent premature hair greying and even attempt to make hair look black. They are better alternatives to the use of chemical dyes which can completely damage the hair. Continue reading to know about 10 hair greying remedies that are suggested by advocates of natural healing to banish that early grey hair. [1, 2]
1. Coconut Oil and Lemon Juice
What to do: Take two parts of coconut oil and mix it with one part of lemon juice. Apply this mix thoroughly on the entire scalp and hair and massage it. Do it every other day, before bed, and wash the hair, as usual, the very next morning.
How it works: Massaging the scalp with this mix helps in improving blood circulation to the scalp hair follicles. Coconut oil is considered a magical elixir of youth. It acts as a natural sunscreen with SPF 8 which further helps in fighting oxidative stress. Even anecdotal evidence suggests that the oil can delay hair greying and encourage hair growth. Lemon is full of antioxidants that work to eliminate free radicals and reduce oxidative stress. Therefore, both have anti-aging properties that may help in delaying premature hair greying to some extent. [3, 4]
2. Amla (Indian gooseberry) and Methi (Fenugreek)
What to do: Smash the amla and take out its seeds. Make a paste of both amla and methi seeds. Apply the paste directly on the hair roots and properly massage the scalp. Amla alone can also be used in the form of fresh juice (daily recommended intake of 6 ounces) or oil to be massaged on the scalp once a week
How it works: Amla has abundant Vitamin C and has long been used in Ayurvedic medicines to treat a variety of hair concerns. It is a natural astringent that can help in preserving natural hair color. Fenugreek seeds (Methi) are rich in several nutrients including potassium and other combination of super ingredients that help one avoid premature hair greying and even promote healthy hair growth. [1, 2, 3]
3. Tea and Coffee
What to do: Boil a little coffee powder or tea leaves in some water for 10 minutes, cool it for a while, and use it for rinsing scalp hair.
How it works: If one wants to retain his natural black hair, tea can successfully do so, and if brownish hair, coffee is the best. Black tea contains tannic acid that can naturally darken the hair and even make them healthy and shiny.
This is one of the best hair greying treatments for getting back natural hair color. What to do: Take an iron vessel and soak Shikakai in water overnight. In the morning, boil the water, cool it, and use it for rinsing scalp hair. Do this regularly.
How it works: It is a natural shampoo effective for a healthier scalp, hair growth, and reduction of greying hair. 
5. Black Sesame Seeds
What to do: Daily before breakfast, on an empty stomach, have raw black sesame seeds with water.
How it works: It helps slow down and possibly turn the grey hair into natural black. Researchers believe that it contains a lot of nutrients and antioxidants that can fight oxidative cell damage which is known to cause aging. [1, 3]
6. Curry Leaves
What to do: Make a paste of ½ cup of yogurt and ¼ cup of curry leaves. Apply the paste to the scalp hair and rinse the head with water after 30 minutes. Repeat it 2-3 times per week.
How it works: It strengthens the hair roots. It is known to have antioxidants, Vitamin B complex, and darkening agents that work together to provide vitality to the hair. [1, 3]
7. Onion Juice
What to do: Apply and wash hair with water after an hour.
How it works: Onion nourishes the hair, prevents greying hair and promotes hair growth. It raises the level of enzyme Catalase, thereby darkening the hair and adding bounce and shine to the hair. [2, 3]
8. Rosemary and Olive Oil
What to do: Fill 1/3 of an 8-ounce jar with dried rosemary and rest with extra virgin olive oil. For 4-6 weeks, leave the jar in a sunny place, shaking it after every few days. Use it as hair oil after 6 weeks.
How it works: Both work to make hair shiny and healthy and prevent premature hair greying. They are high in antioxidant content, it scavenges hydrogen peroxide and free radicals. [1, 2]
9. Almond Oil
What to do: Apply almond oil directly on the scalp or apply a mix of equal parts of almond oil, lemon juice, and amla.
How it works: Almond oil contains abundant Vitamin E, a powerful antioxidant. [1, 3]
10. Natural Health Supplement
Recently, the popular health supplement that serves best what it promises is VitaPost Foligray Natural Support.
VitaPost Foligray to keep your hair healthy, strong, and thick. Recommended dose: Take 2 capsules daily with a meal.
How it works?
It is a dietary supplement that claims for preventing premature greying of hair, supports one’s natural hair color, and keeps hair healthy, strong, and thick. It works if premature greying of hair is caused by a build-up of hydrogen peroxide as the product contains catalase enzyme that helps in the breakdown of hydrogen peroxide. Other beneficial ingredients include Vitamin B complex, zinc, copper, and some herbal extracts.