Papaya. Nutrient rich papaya is an excellent fruit for hair growth. It prevents baldness and activates hair follicles to promote hair growth and strengthen hair from the roots. It also works wonders in clearing dandruff from the scalp.
Fatty fish, like salmon, herring, tuna and sardines offer protein, vitamin D, omega-3 fats and other hair-boosting components (like linoleum acid, an essential fatty acid) to “nourish the skin and thicken the fat layer around the hair follicle, resulting in healthier hair growth,” she adds.
Sources of Biotin
Foods that contain the most biotin include organ meats, eggs, fish, meat, seeds, nuts, and certain vegetables (such as sweet potatoes) [2,12].
"There are specific juices that can be beneficial for the health of your hair and scalp, including aloe vera juice, kiwi juice and cucumber juice." According to Synder, spinach is highly concentrated with vitamin B, which restores shine and promotes hair growth.
Biotin. Biotin, also known as vitamin B7, is a complex B vitamin that is often touted for having hair growth benefits. And some of that hype may actually be worth it. Biotin has functions in “creating red blood cells, which carry oxygen and nutrients to the scalp and hair follicles,” says Dr. Green.
Vitamin A
And vitamin A is essential for your cells to grow, which, in turn, helps your hair grow. Your skin glands also benefit from vitamin A, using it to produce sebum. The sebum (oil) keeps your scalp moisturized and keeps hair healthy. But don't overdo it with vitamin A, as too much can cause hair loss.
We'll cut straight to it: On average, hair grows at a rate of about half an inch per month, or six inches per year. Each hair on your head grows from an individual follicle.
On average, hair grows about half an inch per month. So, in two weeks, you can expect your hair to grow about one-quarter of an inch or half a centimetre every two weeks.
Zinc supports hair growth, strengthens hair follicles and increases thickness. Just as zinc deficiency can cause hair loss, so can excess levels of zinc. Taking zinc supplements in moderation with proper medical advice is key.
In that same vein, adding vitamin B12 supplementation, like dietary supplements, to your routine won't suddenly make hair grow back. However, vitamin B12 may give you the appearance of fuller and thicker hair because the increase in oxygen to hair follicles can help stimulate the replacement of lost strands.
Vitamin D3, an inactive form of vitamin D that your body converts when it needs it, regulates your hair follicle cycles and may help it grow faster. Not getting enough of it could even cause hair loss, so aim for the recommended dose of 15 micrograms (mcg) a day.
Water is a key ingredient that supports vitamins, which contribute to your hair growth. Believe it or not, but water makes up almost 25% of the weight of a single strand of hair. Drinking at least two liters of water a day will help the strength of your hair, increasing growth.
Drink carrot juice every day for quick hair growth. The hair contains the fastest growing tissues in the body and vitamin A is required for the growth of every cell. It also helps the scalp in producing the natural sebum oil which keeps it and the roots healthy to boost hair growth.
Sources of Biotin
This includes walnuts, peanuts, cereals, milk, and egg yolks. Other foods that contain this vitamin are whole meal bread, salmon, pork, sardines, mushroom and cauliflower. Fruits that contain biotin include avocados, bananas and raspberries.
Of all nuts, walnuts are the biggest source of vitamin B7. They contain 9.5 micrograms of biotin per serving.
How fast does hair grow in a week? No matter how much you wish for your hair to grow, it's only reaching two to five millimeters per week, says Dawn Clemens, hairstylist and Founder of LarweHair.
Most hair strands grow at an average rate of about 0.3 to 0.4 mm a day. So, this means it may grow up to one-tenth of an inch or a little more in a week. However, this growth differs with people. Genetics, hormones, nutrition, and stress levels all play a role when it comes to the health and growth of tresses.