Skip to Content

What Does Hair Growth Contain? Learn About Hair Follicles, Blood Circulation, & More (2024)

This site is supported by our readers. We may earn a commission, at no cost to you, if you purchase through links.

Have you ever wondered what makes hair grow? Hair growth is an intricate process, and understanding the components that make it happen can help you better take care of your own hair.

From the tiny follicles in our skin to hormones, blood circulation, and nutrition, there are many elements involved in healthy hair growth.

So, if you’ve been wanting to know more about what happens when it comes to growing a full head of luscious locks or even just maintaining healthy-looking strands, then read on.

Key Takeaways

what does hair growth contain

  • Hair growth is a complex process that involves factors such as follicles, hormones, blood circulation, and nutrition.
  • The hair growth cycle consists of three phases: Anagen, Telogen, and Catagen, and each strand begins with a hair root attached to a tiny muscle surrounded by nerve endings within its own follicle.
  • Nutrients such as proteins, vitamins A, and C are responsible for stimulating new terminal hairs to grow from the base of each follicle, and vitamin deficiencies can lead to poor scalp health or even cause excessive hair loss.
  • Hormones play a vital role in regulating hair growth, affecting the amount and type of hair you have, and genetics also contribute to various aspects such as the color, texture, and rate of hair growth.

The Anatomy of Hair

The Anatomy of Hair
You’ve got a lot going on under the surface of your hair – explore the anatomy of your locks for an insight into how they grow.

Hair is made up of two main types – vellus and terminal hairs. Vellus hairs are short, thin, and light in color, while terminal hairs are longer, thicker, darker strands that cover most areas on our bodies except for palms and soles.

Each strand begins with a hair root attached to a tiny muscle surrounded by nerve endings within its own follicle. The root widens to form a round bulb containing cells that promote nutrition from environmental factors as well as scalp health itself through genetics or hormonal imbalances, which can affect growth rate over time too.

This bulb produces new hair cells during the anagen phase, which lasts longest at around 3-5 years before transitioning into catagen, then telogen phases when old hairs fall out, being replaced by new ones afterwards, again starting this cycle all over once more!

The Hair Growth Cycle

The Hair Growth Cycle
You’re witnessing the amazing journey of your hair’s growth cycle. Every strand on your body, from head hair to vellus and terminal hairs, follows a three-phase process: Anagen – Telogen – Catagen.

During the anagen phase, new cells are formed in the root of each follicle that create a strong shaft composed of protein strands called keratin. As it grows outwards from its source at around 1 cm per month for scalp hairs, pigments like melanin give it color and shape, whether straight or curly, depending on cross-sectional form.

In the telogen phase, lasting two to four weeks, each follicle pauses before entering catagen, where shedding begins as old strands vacate their place for new ones. Arrector pili muscles help expel them outward during this time period too, if cold temperatures occur or when touched lightly by something like clothing fabric fibers brushing against them gently.

Hair loss can be permanent due to damage done to roots, but natural thinning is also expected as we age. Fortunately, our bodies replenish lost locks quickly, so not much is noticed unless many go into resting stage simultaneously, such as after illness or stress events, causing more than 100 daily dropping off head alone being common.

Then, medical attention is usually needed, starting with blood tests plus biopsies if needed.

To keep healthy, eat right, avoid pulling tresses, and use protective gear when necessary, while understanding what you’re seeing now won’t stay forever because every day brings fresh beginnings along with endings.

What is a Hair Follicle?

What is a Hair Follicle?
A hair follicle is a tiny structure in the skin responsible for producing and growing individual strands of hair. Hair follicles can be found all over the body, except on our palms and soles of feet.

There are two main types of hair follicles: vellus hairs, which are short, fine hairs that cover most parts of our bodies; and terminal hairs, which are thicker with more melanin pigment that provides color to facial hair as well as scalp treatments like pubic or head-hair.

Medication use may result in temporary or permanent damage to these structures, leading to increased levels of shedding or complete baldness.

Properly caring for your hair will help reduce excessive shedding caused by damaged follicles while promoting natural luster and shine.

The Components of Hair Follicles

The Components of Hair Follicles
You marvel at the complexity of hair follicles, with their intricate layers and components that seem to stretch on forever. Each follicle consists of several parts: a visible part of the hair, called its shaft; a root beneath it in which new cells are formed; and an area below the skin where nerves and blood vessels support nutrition for healthy growth.

The cross-sectional shape of each strand determines whether it is straight or curly. Oval-shaped strands result in curls, while round shapes form straight locks. Hair hormones influence how quickly these tiny hairs grow from chest hair to longer tresses on your head, usually about one centimeter per month.

Stress can affect overall health, including levels within your scalp, leading to slowed or halted production too! Blood circulation around each individual strand helps carry nourishing nutrients into them all so they remain strong yet flexible enough not only to look great but also to protect you from external elements.

The Role of Blood Circulation in Hair Growth

The Role of Blood Circulation in Hair Growth
Blood circulation plays an important role in your hair growth, nourishing the follicles with essential nutrients and oxygen to keep them strong and healthy.

  • Avoid heat styling your hair, as this can damage the delicate follicle structure.
  • Incorporate scalp massages into your routine to stimulate blood flow.
  • Make dietary changes, such as increasing intake of vitamins A, B, C, D, and E, which are beneficial for healthy hair growth.

In addition to dietary interventions and scalp massage techniques that improve blood circulation, there are also products available, like herbal oils, that contain ingredients known for improving microcirculation in connective tissues surrounding the nerve endings sensing movement by hairs on our body surface.

This results in improved overall health of each individual strand, thus preventing baldness or enhancing the thickness of existing ones. Regular usage of these specialized hair products helps fight against dryness, promotes natural luster, and provides better protection from weathering elements like sun exposure.

Nutrients Essential for Hair Growth

Nutrients Essential for Hair Growth
The role of blood circulation in hair growth is essential, as it supplies the nutrients required for healthy hair. However, nutrition also plays a key part in maintaining strong and vibrant locks.

Nutrients such as proteins, vitamins A, and C are responsible for stimulating new terminal hairs to grow from the base of each follicle. Vitamin deficiencies can lead to poor scalp health or even cause excessive hair loss if not addressed quickly with dietary changes or supplements recommended by your doctor.

It’s important to note that stress management is just as critical when trying to promote healthy hair growth. IQWiG health information warns that chronic stress can interfere with normal hormone levels, which disrupts the usual cycle of anagen-catagen-telogen phases necessary for optimal results.

To ensure proper nourishment needed for growing thick, luscious strands, make sure you’re getting enough sleep and eating foods rich in protein like eggs, fish, nuts & seeds.

The Effects of Hormones on Hair Growth

The Effects of Hormones on Hair Growth
Hormones play a vital role in regulating hair growth, affecting the amount and type of hair you have. Genetics also contribute to various aspects such as the color, texture, and rate of hair growth. Melanin production is also affected by hormones, which vary from person to person, and helps determine hair color.

Proper diet with sufficient vitamins and constant hydration can keep skin health in check, promoting healthy follicles and avoiding deficiency-related issues that can result in reduced or damaged strands.

It is important to consult an expert before using hair care products, as some chemicals can damage delicate follicles if not formulated for use on them specifically.

The process of producing a full strand of hair involves three phases: the Anagen phase, where new cells start multiplying at the base level; the Catagen phase, a transitional stage lasting 2-4 weeks; and finally, the Telogen phase, the final resting phase where old hairs fall out, making room for fresh ones during the next cycle.

Therefore, it is important to maintain a balance between genetics, hormone levels, adequate skin care routine, and vitamin intake while avoiding overuse or abuse of chemical treatments that can lead to long-term damage to our entire body hair.

The Impact of Stress on Hair Growth

The Impact of Stress on Hair Growth
Hormones play a significant role in hair growth, but did you know that stress can also have an impact? When you’re under stress, your body produces cortisol, which can affect the natural growth cycle of your hair.

This hormone disrupts the balance between anagen and telogen phases by pushing more hairs into their resting phase.

The German Institute for Quality and Efficiency in Health Care (IQWiG) suggests incorporating lifestyle changes such as meditation or scalp massage to reduce stress levels. Additionally, diet modifications and regular exercise routines may help combat this issue by promoting overall health and wellbeing.

It’s important to note that some degree of natural hair loss is normal; however, excessive shedding could be a sign of underlying issues caused by too many belly or terminal hairs entering their resting phase due to increased stress levels on the body’s systems.

Common Hair Growth Disorders

Common Hair Growth Disorders
You may experience common hair growth disorders such as alopecia or telogen effluvium.

  1. Dandruff, which is a build-up of dead skin cells on the scalp;
  2. Alopecia, which is an autoimmune condition that causes patchy baldness;
  3. Telogen Effluvium, which is excessive shedding of hairs due to stress or medications;
  4. Trichotillomania, an impulse control disorder in which people compulsively pull out their own hair; and
  5. Androgenetic Alopecia (male pattern baldness), where terminal hairs are replaced with finer vellus hairs over time due to genetic factors and hormones like testosterone and dihydrotestosterone (DHT).

Detailed descriptions of these conditions are available from various sources including textbooks and health information from IQWiG (Institute for Quality Assurance in Health Care).

The suitability of any treatment option should be determined by talking to a doctor based on individual case characteristics as there can be advantages and disadvantages associated with the main treatment options available for each disorder type mentioned above.

It’s important to take care when managing your hair follicles – avoid pulling them too much during styling procedures, eat a healthy diet, reduce stress levels, and use protective equipment while performing activities that put pressure on your head area like cycling, so you don’t damage them irreparably leading down the road towards permanent scarring/hair loss.

Tips for Promoting Healthy Hair Growth

Tips for Promoting Healthy Hair Growth
Taking good care of your scalp can help encourage healthy hair growth. Exercise, diet changes, and proper use of hair products are all important elements in promoting strong locks.

Eating a balanced diet with plenty of protein is key to maintaining the nutrients necessary for growing a full head of healthy hair. Additionally, it’s essential to avoid over-washing or using harsh chemicals on your mane as this can strip away essential oils that protect against damage and dryness.

Scalp massages are also beneficial as they stimulate circulation, which helps promote thicker strands while loosening any buildup or residue from styling products that could be weighing down follicles.

A typical example would be using an oil such as coconut oil twice weekly for twenty minutes each session followed by shampooing afterwards.

Frequently Asked Questions (FAQs)

What are the best ways to promote healthy hair growth?

To promote healthy hair growth, start by eating a balanced diet with plenty of proteins, vitamins, and minerals. Get regular trims to prevent split ends and use quality products for your hair type. Regular exercise can also help improve circulation, which strengthens the roots of your hair follicles.

What vitamins are essential for hair growth?

Vitamins A, C, and E are essential for healthy hair growth. Approximately 90% of the body’s surface is covered with hair follicles that contain these vitamins.

How does stress affect hair growth?

Stress can take a massive toll on your hair growth. It can cause an immense amount of shock to the follicles, potentially leading them to stop producing new hairs and even fall out. Even seemingly minor stresses can have drastic effects, such as drastically slowing down or halting hair growth for long periods of time.

What are the symptoms of common hair growth disorders?

Common hair growth disorders can cause a variety of symptoms, including sudden or excessive hair loss. There are over 5 million follicles present in the body, and losing up to 100 hairs daily is considered normal.

However, damaged follicles may result in baldness or a reduced growth rate. It is important to take care of these delicate structures and maintain healthy habits for optimal results.

How can I tell if my hair follicles are damaged?

To determine if your hair follicles are damaged, look for signs such as thinning, bald patches, and excessive hair shedding. Inspect your scalp closely for any bumps or scabs that could indicate follicle damage.

Regularly check your brush or comb to see if there are more hairs than usual after brushing or combing your hair. If you notice an increase in hair loss, it may be a sign of damaged follicles that are unable to hold onto strands as effectively as healthy ones.


In conclusion, hair growth is a complex process that requires a healthy balance of nutrition, hormones, and blood circulation. Taking good care of your hair is essential for maintaining healthy hair growth. Regularly using proper shampoo and conditioner, limiting heat styling, avoiding excessive brushing and scrubbing, and avoiding tight hairstyles can all help you achieve beautiful and healthy hair.

Furthermore, reducing stress and eating a balanced diet rich in vitamins and minerals can also help to promote healthy hair growth. By understanding the anatomy, components, and cycle of hair growth, you can better care for your hair and maintain healthy, strong, and beautiful hair.

Avatar for Mutasim Sweileh

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.