You should not use lemon juice for hair as it is loaded with citric acid that has a potential to peel off the keratin, a type of protein present in the hair and thus, lighten your hair colour.
Direct application
Rather than using it in place of shampoo or conditioner, apply the lemon juice to the scalp as a pre-shampoo treatment. Leave it on for a few minutes to allow the lemon to penetrate the hair follicles and skin. Afterward, rinse it out with warm water, and wash your hair and scalp with a mild shampoo.
The vitamin C improves the collagen production which in turn makes the hair grow. The citric acid prevents the hair follicles from getting loose, thus reducing hair fall. When used in the scalp, lemons unclog the pores around the follicles which reduces dandruff.
As mentioned earlier, lemon is rich in Vitamin C which helps in the production of collagen and boosts hair growth. It also stimulates hair follicles, which encourages hair growth and can aid in controlling hair loss.
Applying lemon juice on the scalp causes the hair to lose its minerals and colour. It is confirmed that lemon juice lightens or highlights the hair colour because the citric acid in lemon juice is a natural bleach, or oxidizing agent. For this reason, it discolours hair by chemically reducing the hair's melanin.
Lemon juice contains citric acid, which is a natural bleaching agent. Citric acid can whiten fabrics, and it's sometimes included in skin care products to help lighten dark spots. It's this ingredient that gradually whitens hair, making it appear lighter in color.
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.
Though, ageing is the primary reason of grey hair but premature greying of hair in early 20's or 30's is now common. Genetic factors, stress, lack of nutrition, chemicals, smoking or any underlying disease like anemia can also lead to premature greying of hair.
Genetics
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.
Graying is a gradual process; according to a study by L'Oreal, overall, of those between 45 and 65 years old, 74% had some gray hair, covering an average of 27% of their head, and approximately 1 in 10 people had no gray hairs even after the age of 60.
Ghee is a Permanent Solution for Grey Hair
Ghee plays an important part in various medicines in Ayurveda. It seals moisture within the scalp and promotes good hair health. It is also a very effective medicine for grey hair.
First, you can try mixing lemon juice and water with a ratio of two tablespoons of lemon juice to one cup of water. Place the mixture in a spray bottle, apply to hair and let dry in the sun. For overnight effects, once your hair is dry, wrap it up and sleep with the solution in your hair overnight.
Lemon juice can help in thoroughly cleansing the scalp with its antimicrobial properties and in tightening the follicles too, thus preventing dandruff. All you need to do is take a few tablespoons of lemon juice and massage it on your scalp. Leave it for 10 minutes, then wash off with a mild shampoo.
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.
There are no treatments that are proven to treat (or reverse) gray hair. For now, the best choice for people who want to cover their gray hair is to use hair coloring, which can be temporary or permanent depending on the type.
Drink six ounces of fresh amla juice every day or massage your hair with amla oil one time each week. Amla is also known as Indian gooseberry. Black sesame seeds (Sesamum indicum). Two to three times a week, eat a tablespoon of black sesame seeds to slow down and possibly reverse the graying process.
Blonde Hair
But this isn't the case because blonde hair is the 2nd rarest natural hair color. Only 3% of the total global population is blonde.
Natural red hair is the rarest hair color in the world, only occurring in 1 to 2% of the global population. Since red hair is a recessive genetic trait, it is necessary for both parents to carry the gene, whether or not they themselves are redheaded.
Type 1A hair is very straight and fine, with no hint of wave or curl. As it is so straight and fine, when the natural oils travel to the ends, it tends to cause it to look like oily hair. It is the rarest hair type and is common among women of Asian descent.
It is in fact medically impossible; there is no mechanism by which hair could organically turn white, either suddenly or overnight.
Kraleti doesn't recommend plucking or pulling the hairs out. “If there is a gray hair you must get rid of, very carefully cut it off. Plucking can traumatize the hair follicle, and repeated trauma to any follicle can cause infection, scar formation or possibly lead to bald patches.”
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, medications, your gray hair cannot be reversed.
Biotin has many benefits. It triggers hair growth, it treats hair loss related disorders, and it thickens and strengthens the hair. One of our favorite beneficial effects of Biotin is that is can reverse premature greying of hair.
Coconut oil helps retain the protein in the hair and prevent greying. Also, the oil has nourishing properties which is good for your hair. To use this oil for keeping whitening of hair at bay, you directly need to apply 2 tablespoons of virgin coconut oil to your scalp and hair.