Medically reviewed by Debra rose Wilson, Ph.D., MSN, R.N., IBCLC, AHN-BC, CHT — written by Christal Yuen — to update on march 7, 2019

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You are watching: How long does it take to grow hair 12 inches


How rapid does hair yes, really grow?

We room born with the full amount that hair follicles we will ever have end our lifetime. There may be around 5 million on ours body, yet our head has around 100,000 follicles. Together we age, some follicles stop producing hair, i m sorry is exactly how baldness or hair thinning occurs.

The American Academy of Dermatology says that hair grows about 1/2 inch per month ~ above average. That’s a grand full of around 6 inches every year because that the hair on her head.

How rapid your hair grow will depend on your:

agespecific hair typeoverall healthother health problems

Science has found a tiny bit around how hair growth is managed at the moving level in the body, yet not sufficient to know just how we can straight speed increase hair growth. Check out on to learn around the science behind hair growth and also how to use that understanding for healthier hair.


The stages of hair growth

Hair grows in 3 stages, and also each strand of hair complies with its own timeline. These 3 stages are:

anagen: active growth step of hair that lasts 2-8 yearscatagen: shift phase whereby hair stop growing, big 4-6 weekstelogen: resting phase where hair falls out, big 2-3 months

The typical scalp has 90-95 percent that the hair follicles in anagen phase. This way about 5-10 percent room in the telogen phase, which accounts because that the 100-150 hairs that loss out every day.

Can you increase the anagen phase because that hair growth?

How long the anagen step lasts counts on how long your hair is and also if the cell in your follicle basic are continuing to multiply and become hair cells. Hair grows since matrix cells melted some that their structure as they with the top follicle. The melted structure combines with keratins to form hair strands that departure your skin’s surface.

Researchers space still looking into what cause our bodies to “turn on” the anagen phases. Yet there are measures you deserve to take come promote healthy hair throughout the anagen phase.


Hair is made up of keratin and dead skin cells. When there’s no direct technique to make your hair grow quicker overnight, over there are procedures you can take to store your hair healthy and long. Speak to her doctor before trying supplements such together biotin, keratin, or other nutritional supplements. Lock may interact with medications and cause unintended side effects.

1. Store up v vitamins and also nutrients

While plenty of companies promote vitamin or supplements because that hair growth, castle don’t always directly affect hair length. Yet the human body does call for a lot of of power to make her hair grow. Absent out on well balanced meals and nutrients can impact hair growth.

It’s best to get your vitamins and nutrients from your diet, yet supplements you might be interested in include:


Vitamin or nutrientDoes it work?Studies
omega-3 and 6may workIn a study of 120 healthy females, the team who take it omega-3 and -6 supplements had less hair loss and improved hair density.
zincmay only influence those with a zinc deficiencyZinc deficiency plays a function in hair loss.
B-5 and also biotinno proof that it works for human being who room not biotin deficientA examine that looked at oral supplements comprise biotin and zinc uncovered that castle helped reduced hair shedding and also improved hair quality and also strength.
vitamin Canecdotal evidenceThe antioxidant results of vitamin C may assist prevent oxidative anxiety that reasons hair come gray and thin out.
ironmay only work-related if you have an iron deficiencyInsufficient proof for the relationship between iron deficiency and hair loss.
vitamin Dmay only work if you have actually alopecia, or hair lossOne study uncovered that human being with alopecia had actually vitamin D deficiencies.

Read more: Vitamins because that hair growth »

2. Apply essential oils

Put a couple of drops the right into your shampoo or dilute it v jojoba oil. One study proved that pumpkin seed rises hair counting for males with hair loss by 40 percent.

Avoid using essential oils straight to her skin. You can dilute the oil through a couple of drops of crucial oil per ounce of transport oil. Two other oils the may help include rosemary and peppermint oil. When the trials have actually been animal studies, results indicate that these oils may benefit hair growth.

You can additionally mix these crucial oils with other carrier oil that avoid hair damage, such as:

Read more: go coconut oil occupational for hair growth? »

3. Shot topical ointments

Topical ointments are usually for people experiencing hair loss. Lock may aid your hair grow. Studies show that these commodities are reliable in treating alopecia, or hair loss, and also promoting hair growth:

Propeciaketoconazole shampoo

4. Take it keratin additionally

There aren’t numerous studies top top the impacts of protein, keratin, and also vitamins ~ above hair health. One study looked at a product that had 500 milligrams the keratin and other vitamins and minerals. The group that took the supplement showed:

12.5 percent palliation in hair loss5.9 percent enhanced in hair strengthimproved hair brightness and also luster

5. Use protein

Protein helps her hair grow and also protect the from chemical and also environmental damage. If you format or apply heat to your hair often, using a protein therapy can defend your hair. You have the right to purchase these virtual or use coconut oil at home. Coconut oil helps mitigate protein shed both before and after washing hair.

Too lot protein can affect your kidneys. The may additionally cause her hair to become brittle, return this is rare. It’s best to gain protein from your diet and not supplements. Girlfriend can acquire protein native vegetables, nuts, yogurt, and other foods.

6. Caffeinate your follicles

Studies room still brand-new on the impacts of caffeine top top hair growth, but a cabinet study discovered that caffeine may have actually growth-promoting effects on hair. Making use of hair commodities with caffeine, prefer this shampoo by abdominal Crew, together an ingredient might help.

See more: Zeke And Luther Theme Song Lyrics Chords, Zeke And Luther Theme

Read more: observed palmetto for hair loss? »


There room a couple of factors that can affect hair growth, including:

genetics or family history of hair losshormonal changeslack of nutritionmedicationsstresstrauma that loss folliclesother illness or conditions

It’s additionally important to keep in mind that if you room experiencing unexplained and severe hair loss, you must schedule a checkup with your doctor, as certain illnesses and also health problems can reason hair loss.

Hair growth during and also after pregnancy

Women who space pregnant might feel the their hair is actually cultivation faster. And women who have just had a baby might feel choose they are shedding their hair at a much faster rate than normal. This is because during pregnancy, the hormone estrogen actually causes a woman to have actually a greater ratio that hair follicles in the farming phase. After ~ the infant is born, hair follicles go back to the “resting” phase, make it appear as if they room shedding hair.