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Why Does Hair Grow So Fast? Causes & Tips for Healthy Growth (2023)

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why hair grow so fastDo you ever wonder why your hair grows so fast? You’re not alone. Hair growth varies from person to person, but understanding the factors that influence its rate can help explain what’s behind yours.

From genetics and ethnicity to gender and age, there are many variables at play when it comes to how quickly our hair grows—and whether or not it’s growing too quickly! In this article, we’ll explore the science of why our hair grows as fast (or slow) as it does.

We’ll also discuss common causes for faster regrowth rates and provide tips for increasing anagen phase duration in order to promote healthier growth cycles.

Plus, we’ll cover much more! So if you’ve been wondering exactly why your tresses grow like they do, look no further than this comprehensive guide on all things related to healthy and speedy hair growth.

Key Takeaways

  • Genetics, hormones, age, health conditions, and environment are factors that affect hair growth rate.
  • The average growth rate for scalp hair is 0.3-0.5mm/day, with thicker hair growing faster (up to 2cm/month) and thinner hair growing slower (0.6-1cm/month). Younger people tend to have faster growth.
  • Blunting, irritation, medications, hormones, genetics, ethnicity, and thickness can cause faster hair regrowth.
  • Essential oils, nutrients like biotin and keratin, caffeine, and a balanced diet can increase the duration of the anagen phase, promoting hair growth.

Factors Affecting Hair Growth Rate

Factors Affecting Hair Growth Rate
You may be surprised to learn that your hair growth rate is impacted by a variety of factors, like genetics, hormones, age, and even environmental conditions.

All the cells in the body have certain cycles that determine how quickly they divide and reproduce new cells – this includes hair follicles! The amount of time it takes for these cycles to complete affects our overall rate of hair growth.

Different types of hairs can grow at different rates too. Thicker hairs tend to grow faster than thinner ones due to their higher number of active cell divisions within each cycle.

Age also plays a role. Younger individuals typically experience more rapid rates compared to older individuals due to its connection with hormone levels and metabolism changes over time.

Our health can also have an impact on our locks. Certain medical conditions like thyroid problems or nutrient deficiencies can cause slower rates or alterations in texture. On the other hand, healthier individuals often see quicker results from treatments such as topical solutions or supplements that promote healthy strands.

Finally, your environment has less influence but is still noteworthy. Exposure to extreme temperatures (hot/cold) might affect some people’s scalp health, leading them towards faster regrowth when corrected.


Your ethnicity can affect the speed and thickness of hair growth, with Asian hair being among the thickest and fastest growing. Facial hairs tend to grow faster in young adults of European descent. The thickest hairs are usually found among those who have African or Asian ancestry.

Erling Thom conducted a study which revealed that there were significant differences between racial groups when it came to the rate of hair growth.

Thicker strands may grow up to 2 cm/month, while thinner ones may take longer at 0.

Hair Thickness

Hair Thickness
Thickness is a major factor in how quickly hair grows, with thicker strands typically growing up to 2 cm/month – almost three times as fast as thinner ones. Male hormones play an important role in determining the thickness of your hair. A blood test can be taken to determine if you have any imbalances that could cause pattern baldness or thinning of the hair, regardless of ethnicity.

Thicker hairs tend to grow faster and healthier than those that are thinner due to their increased surface area for absorption and better circulation throughout the scalp, which helps nourish them more efficiently overall.


Gender is an important factor in determining how quickly hair grows, with males typically having slower rates than females due to hormone differences. Women’s health can also affect their rate of growth; if a woman has excessively high male-pattern excess hair or testosterone levels, she may experience faster growth.

On the other hand, women with polycystic ovary syndrome (PCOS) may suffer from slowed or stunted growth due to hormones that inhibit it.

Hormones play a role in both men and women’s individual rates of hair regrowth. Lowered stress levels help promote healthy follicle development for all genders. DHT (dihydrotestosterone) inhibitors are medications often prescribed by doctors for those struggling with excess shedding.

Genetics also plays an integral part in when and how fast our strands grow back after being cut or removed.

Overall, understanding one’s own personal biology is essential for optimizing your desired results when it comes to achieving the ideal length!


As you age, hair growth rate may naturally slow due to thinning fibers and hormonal changes.

As our bodies change with time, so too does our body’s natural cycle for producing hair. The telogen phase is where most hairs are shed while new ones grow in their place; this process can be slowed by aging or decreased estrogen levels.

Younger individuals typically produce more terminal hairs–the thicker strands that form a protective layer against environmental elements–while vellus hairs become more prominent on older people’s scalps.

These hairs tend to be finer and require less maintenance than those found on younger generations.

Taking the necessary steps towards understanding your own personal biology will help optimize desired results when it comes to growing luscious locks at any age!

Environmental Factors

Environmental Factors
Living in a healthy environment can help you maintain your hair’s natural growth rate, regardless of age or ethnicity! Nutrition plays an important role in maintaining hair health, and a balanced diet is key.

Pollution and sun exposure can also affect the scalp, so it’s best to protect yourself with proper clothing and/or using products designed for protecting against environmental factors.

Here are four tips that will keep your body hair changes at bay:

  1. Use quality protective gear such as hats, scarves, or umbrellas when outside.
  2. Incorporate healthy foods like lean proteins into your meals.
  3. Regularly use shampoos specifically formulated for promoting strong and healthy hair.
  4. Reduce stress levels by engaging in activities that bring you joy.

Taking these steps will ensure healthier-looking locks while helping shed fewer hairs over time! By investing the right amount of care into one’s own personal hygiene routine, everyone has the potential to achieve their desired look without compromising on beauty standards set by society today.

Understanding the Average Hair Growth Rate

Understanding the Average Hair Growth Rate
Understanding your average hair growth rate can help you determine the best steps to take for maintaining healthy and strong locks.

Genetics largely influence hair thickness – Asian hair is typically thicker compared to African or European strands. Age also plays a role as younger people tend to have faster-growing tresses than those in their later years.

Hormones may be responsible for errant hairs showing up on little body areas like the chin or upper lip of women, which signals an excess of testosterone being produced in her system.

Certain nutrients can promote thick luscious locks too, such as biotin found naturally occurring in egg yolks or taken through supplements like HUM Hair Strong. It should be consumed two capsules daily with food after consulting a doctor if necessary before taking it long-term.

Taking time out from everyday life activities just once a week will also go a good way towards keeping the scalp nourished and free from environmental pollutants that could damage follicles over time!

Factors Affecting Growth Rate

Factors Affecting Growth Rate
You may be familiar with how genetics and age influence hair growth rate, but there are other factors that can impact this process:

  • Male pattern baldness is caused by an imbalance of male hormones.
  • Thyroid hormones can affect the amount of testosterone produced in the body.
  • Autoimmune thyroid disease causes increased production of testosterone, which leads to faster hair growth.
  • Certain medications, such as steroids, can cause a shift in hormone levels resulting in faster regrowth rates.

The key takeaway is that hormones play a significant role when it comes to your average hair growth rate – from naturally occurring ones like testosterone and estrogen to those triggered by illness or medication use! While environmental impacts are minor compared to genetic influences, understanding these hormonal changes is essential for healthy locks over time!

Range of Average Growth Rate

Range of Average Growth Rate
Knowing your individual hair growth rate is important, as the average scalp hair can grow anywhere from 0.

For example, a woman in her twenties may have noticed that after shaving her legs for the first time, she began to see signs of new growth much sooner than expected.

The range of average hair growth rate varies depending on several factors such as age, gender, and hormones. It can even be impacted by conditions like telogen effluvium or hirsutism due to iron deficiency or thyroid-related hair loss, respectively.

There are also environmental influences such as diet and stress levels, which could affect how quickly one’s locks grow back after shedding them naturally or through styling techniques like waxing or plucking, which damage follicles over time.

While there is no way to guarantee an exact number for everyone’s personal growth speed, it is still important to understand what impacts this process when seeking out treatments for thinning tresses!

Causes of Faster Hair Regrowth

Causes of Faster Hair Regrowth
You may be wondering why your hair seems to grow back faster than ever before, and the answer lies in several key factors. Blunting and irritation of follicles can trigger a cycle that encourages regrowth, while medications like steroids or hormone changes during pregnancy can also speed up the process.

Genetics have an impact on growth rate, as does ethnicity. African hair is known to be the slowest growing, whereas Asian hair is the fastest.

Blunting and Irritation

Blunting hair by shaving and other methods can trigger a cycle of rapid regrowth due to irritation, while medications like steroids or hormone changes during pregnancy may also accelerate the process. Irritation encourages faster regrowth, so it’s important to take precautions when removing hair: use a new razor with grain; exfoliate before waxing or shaving; and avoid picking ingrown hairs.

For diffuse hair loss from an underactive thyroid or autoimmune problem, purchase OTC hydrocortisone cream for inflammation relief and seek treatment if needed. Consider using supplements like Hair Strong that contain vitamins and minerals, as well as pure carrier oils for aromatherapy recipes.

These supplements have a shelf life of 6 months, and results may take 3-4 months.

Medications and Hormone Changes

Experiencing hormonal changes, such as during pregnancy or when taking steroids, can cause a surge in hair regrowth. Medications like these alter the rate of growth and tend to produce faster results than other treatments.

Dr. Gary Goldenberg from Mount Sinai notes that hormonal fluctuations play an important role in hair loss. Similarly, Dr. Wierman advises patients to talk with their doctor about any medications they are taking for potential side effects on the scalp and follicles.

With careful monitoring of hormones and medications, healthy people may be able to achieve fast regrowth rates without compromising safety or health.

Genetics and Ethnicity

Your genetics and ethnicity can influence the rate of your hair regrowth, so don’t be surprised if you experience different results than others. Hair loss conditions, noticeable hair loss, deficiency of iron, and developmental problems such as hirsutism are associated with genetic makeup.

This means some people may grow their manes faster or slower in comparison to those who do not suffer from these issues. Furthermore, certain ethnicities tend to have thicker strands, which can result in faster growth rates when compared to finer varieties.

Keep an eye out for any signs that could indicate a potential issue linked back to genetics or ethnicity – it could help explain why your tresses seem more resilient than others!

How to Increase the Anagen Phase for Hair Growth

How to Increase the Anagen Phase for Hair Growth
Have you ever wondered why hair grows fast? The answer lies in several key factors, such as nutritional elements and vitamins, essential oils and carrier oils, keratin supplements, and caffeine to stimulate follicles.

If you are looking for ways to increase the anagen phase of your hair growth cycle – the active phase when new hairs grow from existing ones – then these methods can be worth exploring.

Nutritional Factors and Vitamins

Aside from genetics and ethnicity, your diet can make a big difference in the speed of hair growth. Excess body hair growth may be caused by an imbalance of reproductive hormones, so eating nutrient-rich foods with plenty of essential vitamins can help keep hormone levels regulated.

Eating a variety of normal foods such as fruits and vegetables is important for overall health. Irregular or heavy periods could point to iron deficiencies, which should also be addressed through nutrition.

Essential Oils and Carrier Oils

Using essential oils and carrier oils can help to nourish the scalp, strengthening hair follicles for improved growth. They can also help reduce the condition of unwanted male-pattern hair growth, improve health in women of childbearing age, reduce symptoms associated with certain autoimmune conditions, soothe specific skin and scalp irritations related to hormones or genetics, and provide relief from upper chest discomfort due to increased body hair production or sensitivity due to certain medications or treatments.

Keratin Supplements

Rather than relying on drugs and chemicals, consider taking keratin supplements. A professor of medicine defines hirsutism as abnormal or excessive hair growth that can be relieved through diet modification and supplementation like those offered by the Icahn School of Medicine’s Assistant Clinical Professor of Dermatology, chief endocrinologist.

Keratin helps to nourish follicles for improved growth while also reducing male-pattern hair production symptoms naturally – making it a powerful ally in gaining control over your own health destiny.

Caffeine for Follicle Stimulation

Try using caffeine to stimulate your hair follicles and promote faster growth! Caffeine can reverse drastic weight loss, certain medications, or menstrual cycle changes that slow down the anagen phase.

The University of Colorado Medical Center recommends it for menopausal women looking to restore their crowning glory by stimulating new follicle production around the belly button area. In addition, its anti-inflammatory property helps prevent inflammation in existing hairs, which further encourages growth.

The Impact of Weather on Hair Growth

The Impact of Weather on Hair Growth
Experience the effects of temperature and humidity on your hair growth – from thickening in cooler climates to thinning in hot, humid ones. The weather can have a significant impact on the rate at which one’s hair grows.

Here are four key elements to consider:

  1. Sign of PCOS: Women with polycystic ovary syndrome (PCOS) may experience more extreme changes due to their hormonal imbalance caused by this condition, including increased sensitivity to heat and humidity leading to greater shedding or slower regrowth.
  2. Extreme Stress: Research conducted at the National Institute of Diabetes has found that extreme stress levels can cause telogen effluvium – a condition where large amounts of hairs enter into the resting phase simultaneously – resulting in longer periods between new strand growth cycles.
  3. Odd Cravings: Poor nutrition due to physical changes such as odd cravings associated with pregnancy or menopause can lead directly to lower rates for healthy hair development overall; particularly if those cravings consist mainly of processed foods lacking vitamin content beneficial for strong locks like iron, zinc, biotin, etc.
  4. Higher Risk: People living in hotter regions tend to be at a higher risk for damaging their strands through over-styling during summer months; often experienced as split ends along lengths, therefore requiring regular trims to promote the healthiest possible lock structure and encourage faster future re-growth spurts.

The Effect of Hair Length on Growth Rate

The Effect of Hair Length on Growth Rate
You may find that the rate of hair growth is affected by its length, with shorter strands often regrowing faster than longer ones. Certain antidepressants, kidney diseases, and a type of steroid can cause sudden increases in hair growth.

Research conducted at Denver’s Veterans Administration Medical Center revealed that individuals who had an increase in their testosterone levels experienced greater rates of hair regrowth compared to those whose hormones stayed relatively stable over time.

It follows then that different lengths will respond differently to external factors such as climate and lifestyle choices. For instance, long locks are more prone to breakage due to styling or environmental exposure, which could slow down the overall speed at which it grows back.

On the other hand, shorter styles have fewer risks associated with them, thus promoting healthier regrowth cycles. This eventually leads up to desired results quicker if properly maintained on a regular basis.

Understanding the Hair Growth Cycle

Understanding the Hair Growth Cycle
Discover the fascinating process of hair growth as you explore the different stages of its cycle.

Hair is made up of a follicle, which rests in a group called papilla that contains blood vessels and nerves.

This occurs in three phases: anagen (growth), catagen (transition), and telogen (resting).

During anagen, brittle nails can be attributed to poor nutrition or major surgery.

During catagen, immune system responses cause single nipple hairs to rest for several weeks before returning back into circulation again.

Finally, during the telogen phase, the butterfly-shaped gland within each root secretes hormones responsible for regulating your hair’s length and thickness over time until it eventually falls out completely – only starting anew once more with every passing cycle!

How Long Does It Take to Speed Up Hair Growth?

How Long Does It Take to Speed Up Hair Growth
Unlock the potential of your locks and see the difference that proper care can make by speeding up hair growth!

There are a slew of symptoms associated with slower-than-usual hair growth, from adult acne to thinning or balding patches. You may also notice a direct impact on pubic area hairs, which grow at differing amounts based on age and hormones.

To help speed up hair growth naturally, you should consider:

  • Eating more biotin-rich foods like eggs and nuts for stronger strands.
  • Massaging essential oils like rosemary into the scalp twice daily to stimulate follicles.
  • Using gentle shampoos that won’t strip away natural moisture levels.

With regular use over several months, these methods have been known to increase the rate at which your mane grows in length as well as thickness – just be patient!

If you’re still not seeing results after trying all these steps, it might be worth visiting a dermatologist who will assess any underlying problems causing slow regrowth before recommending treatments such as laser therapy or topical solutions specifically designed for this purpose.

When to Seek Medical Attention for Excessive Hair Growth

When to Seek Medical Attention for Excessive Hair Growth
If you’re noticing excessive hair growth, it may be a sign of an underlying medical condition. Hormonal imbalances, Polycystic Ovary Syndrome (PCOS), iron deficiency, and an underactive thyroid can all result in increased body and facial hair.

It is also possible for medication side effects or autoimmune disorders to cause the same issue, as well as tumors in rare cases. Consulting your healthcare provider is important if you are experiencing any abnormal changes in your hair growth rate so they can diagnose and treat the root cause of the problem quickly.

Hormonal Imbalances

Hormonal imbalances can be the hidden cause of your hair growth rate slowing, affecting everything from pubic to scalp hairs. The Latin word hormone translates to set in motion, and NYC’s pigmented bad boys may find it has slowed their body’s functions too.

Discover new solutions through diet, massaging oils, and gentle shampoos – or professional treatments like laser therapy for stubborn cases.

Polycystic Ovary Syndrome (PCOS)

If you’re experiencing unexpected hair growth, it could be a sign of Polycystic Ovary Syndrome (PCOS). Prevention requires diet modification, vitamin supplements, and understanding causes. Options include laser therapy to prevent further loss; regrowth depends on lifestyle changes for the best results.

Iron Deficiency

An iron deficiency can cause hair to grow faster, so ensure your diet contains this essential mineral. Dietary sources make getting enough easier; foods provide the same benefits without any negative consequences.

A rich diet, good sleep hygiene, stress management, and protein intake are all helpful.

Underactive Thyroid

You may be experiencing excessive hair growth if you have an underactive thyroid. Thyroid symptoms, disease, hormones, and treatment can affect the hair’s growth rate. The diagnosis process includes lab tests; a medical professional outlines a suitable course of action for a specific case.

Medication Side Effects

Be aware that certain medications can cause side effects like excessive hair growth. Hormonal imbalances, PCOS symptoms, iron deficiency, and thyroid issues may be factors. Medication interactions should also be considered to understand potential risks.

  • Check for signs of hormonal imbalance or polycystic ovary syndrome (PCOS).
  • Look into iron deficiencies; low levels impact hair health.
  • Rule out any underlying thyroid issue through lab tests.
  • Discuss possible medication interactions with a doctor.

Autoimmune Disorders

Certain autoimmune disorders, such as lupus or alopecia areata, can cause accelerated hair growth. Genetic markers and lifestyle choices contribute to this; dietary changes, stress reduction, and treatment options may help.


Tumors, such as pilomatrixoma and trichilemmal tumors, may be associated with rapid hair growth:

  • Polycystic Ovary Syndrome can cause excessive hair growth.
  • Iron deficiency often triggers abnormal regrowth.
  • Medication side effects can lead to accelerated tumor formation.
  • Autoimmune disorders are sometimes linked to increased hairs per cm2. Treatment requires specialist care; seeking medical help is essential for proper diagnosis and treatment plan development.

Tips for Managing and Maintaining Healthy Hair Growth

Tips for Managing and Maintaining Healthy Hair Growth
Excessive hair growth can be a symptom of an underlying medical condition, so it’s important to speak with your healthcare provider if you experience any abnormal changes in the rate of your hair growth.

Luckily, there are also many tips for managing and maintaining healthy hair growth. Trimming regularly helps keep split ends at bay, while moisturizing after each trim will help keep the cuticles smooth and prevent breakage.

Exfoliating before waxing or shaving is key because it removes dead skin cells, which can lead to ingrown hairs – ouch! Lastly, when removing pubic or facial hair via waxing or shaving, always go against the grain (not with) to minimize irritation and discomfort post-removal.

With these simple steps, you’ll have smoother, healthier-looking locks in no time!

Frequently Asked Questions (FAQs)

Are there alternatives to shaving for hair removal?

Yes, there are alternatives to shaving for hair removal. Waxing pulls the hair from its root and can last for weeks; creams dissolve the hair below the skin level; laser treatments damage follicles to prevent regrowth; or you can use scissors to maintain length without stubble.

Is there a difference in hair growth rate between pubic and scalp hair?

Pubic hair grows at the same rate as scalp hair on average, although shaving may cause it to appear faster. Trim before removal to minimize irritation and use moisturizer afterward. Alternatives like waxing or laser treatments can provide more permanent solutions with less discomfort.

What are some common causes of faster hair regrowth?

Common causes of faster hair regrowth include blunting, irritation, medications like steroids, and hormone changes during pregnancy. Genetics and ethnicity can also affect the rate of regrowth. To minimize discomfort or prevent further damage, use products designed to soothe the skin after removal and avoid picking ingrown hairs.

What are the benefits of pubic hair?

Pubic hair cushions friction during sex, wicks moisture away, provides contour for swimsuits, and regulates body temperature. Its presence can also trap pheromones, which may be attractive to potential partners.

What are some discomfort relief methods for hair removal?

To avoid irritation and ingrown hairs from hair removal, try moisturizing after shaving, exfoliating before waxing, using a new razor with the grain of your hair growth pattern. Additionally, use aloe vera for razor burn relief and loose cotton underwear to reduce friction.


With genetic and environmental factors playing a key role in determining how quickly hair grows, it’s not surprising that the average hair growth rate varies from person to person. On average, scalp hair grows at a rate of 0.32-0.46 mm per day, while pubic hair may grow faster after shaving due to blunting.

To help promote healthy hair growth, it is important to incorporate nutritional factors and vitamins, use essential oils and carrier oils, and explore keratin supplements or caffeine-based follicle stimulators.

Additionally, regular care and maintenance are essential for keeping hair healthy, including trimming before shaving, moisturizing after, and avoiding picking or popping ingrown hairs.

Ultimately, understanding the factors that affect hair growth can help you find the right approach to promote healthy hair growth for you.

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Mutasim Sweileh

Mutasim is a published author and software engineer and beard care expert from the US. To date, he has helped thousands of men make their beards look better and get fatter. His work has been mentioned in countless notable publications on men's care and style and has been cited in Seeker, Wikihow, GQ, TED, and Buzzfeed.