A healthy, full head of hair can boost anyone’s mood. Unfortunately, not everyone is blessed with full and thick hair. Across the globe, we see a growing interest in how to promote hair growth. For this group, we’ve developed a comprehensive guide that provides a complete overview of everything involved in hair growth and hair loss.
At the heart of this guide is the question: how can you improve your own hair growth? What works varies from person to person, as many different factors influence hair growth and hair loss. For example:
- Gender
- Age
- Nutritional deficiencies
- Use of hair products and genetics
While nothing can be done about genetics, this guide focuses on the factors you can influence. We also want to help you avoid common hair growth myths saving you time, effort and money in the process.
Hair growth cycle explained
When you are born, you have around 5 million hair follicles across your body, with about one million on your head and an average of 100,000 on your scalp. This is the highest number of hair follicles you’ll ever have, as no new follicles are formed after birth. Hair always grows from the same follicles that have been present since birth. The exact number of follicles on the scalp varies from person to person, depending on genetics. Multiple hairs can grow from a single follicle, typically two to three hairs per follicle.
Hair growth occurs in a cycle. This means your hair goes through different stages during its growth and repeats these stages after each hair falls out. Hair growth takes place in three distinct phases. Simply put, it works as follows:
Image 1: hair growth cycle explained
Want to learn more about how to support healthy hair growth? Read our detailed article on the hair growth cycle and hair care!
Why do I have excessive hair loss?
Hair loss is a natural process that happens to everyone, just like hair growth. It is perfectly normal to lose between 50 to 100 hairs per day without it being noticeable, thanks to the continuous cycle of hair renewal. Only when more hairs fall out than grow back can it be considered excessive hair loss.
To prevent hair-related issues, understanding hair conditions and the causes of hair loss is essential. Genetics, ageing, stress, hormonal changes, and medical conditions can all contribute. Additionally, scalp issues such as inflammation caused by tension or oxidative stress can damage hair follicles and hinder healthy growth. Thinning hair or bald spots may then give the false impression that your hair has stopped growing.
That’s why it’s important to identify the root cause rather than randomly trying out products. In some cases, it is advisable to consult a doctor or dermatologist to determine or rule out any underlying medical conditions.
Heredity
The most common cause of hair loss is a hereditary condition. Hereditary hair loss, also known as androgenetic alopecia, often occurs with ageing. It develops gradually in predictable patterns, which differ between men and women.
Gender plays a role in hair loss
Genetic hair loss, also known as androgenetic alopecia, affects both men and women. This type of hair loss follows a recognisable pattern, which varies depending on gender.
Hair loss women
In women, genetic hair loss usually presents as thinning hair, particularly around the crown and top of the head. As a result, the scalp becomes increasingly visible. The progression of this type of hair loss is measured using the Ludwig scale.
In addition to genetic predisposition, hormonal fluctuations during and mainly after pregnancy, the lactation period, and during the menopause can also cause temporary hair loss. This is due to changes in estrogen levels, which affect the hair growth cycle.
Curious about hair loss regarding women? Discover effective solutions on our page about female hair loss.
Hair loss men
Men are at a higher risk of baldness than women because they produce more of the hormone DHT (dihydrotestosterone). This hormone causes hair follicles to gradually shrink, leading to thinner hair and eventually hair loss.
In men, hair loss typically starts at the temples and crown. A receding hairline is often one of the first visible signs. Over time, only hair on the sides and back of the head may remain. The progression of male pattern baldness is measured using the Norwood scale.
Want to know how to slow down hair loss in men? Read our blog about hair loss for men.
Seasonal hair loss
Seasonal hair loss happens to both men and women and often reaches a peak in autumn. This is because many hairs enter the resting phase (called telogen) during summer and fall out after about 2 to 3 months. In spring, there can also be a small increase in hair loss, possibly due to longer days and more sunlight, which can affect the hair growth cycle. A scientific study supports this pattern. Researchers have also looked at how often people search online for words like "hair loss". They found that people do this most often between August and October, which suggests that more people notice hair loss during that time.
In winter, hair loss may worsen due to dry air, which dehydrates the scalp and can lead to dandruff and brittle hair. During summer, heat and sun exposure can put extra stress on the scalp. Strong UV rays can damage hair follicles, and sweating may also contribute to increased shedding.
Fortunately, seasonal hair loss is temporary, and hair typically grows back on its own. Hair growth products can support recovery. To keep your hair healthy year-round, ensure your scalp stays well-hydrated, protect it from the elements, and maintain a nutrient-rich diet.
Read more about the causes and solutions in our blog about seasonal hair loss.
To much stress
Stress can lead to thinning hair, often appearing a few months after a physical or emotional shock. This type of hair loss, known as Telogen Effluvium, occurs when stress pushes a large number of hair follicles prematurely into the resting (telogen) phase, causing the hair to shed more rapidly than usual.
During times of stress, your body produces adrenaline, which can reduce blood flow to the scalp. As a result, hair follicles receive less oxygen and fewer nutrients, which may slow down hair growth.
Fortunately, stress related hair loss is usually temporary and reverses once the stress subsides. To minimise hair loss, it's important to maintain a healthy lifestyle with adequate sleep, a balanced diet and regular physical activity. Stress management techniques such as meditation and breathing exercises can also help reduce stress and limit hair loss.
Teenage hair loss
Hair loss can begin as early as the teenage years, although most people only start to notice it later in life. Experiencing hair loss at a young age can have a significant impact on self-esteem and is often difficult to accept.
Everyone loses some hair daily. This is completely normal. However, excessive hair loss in teenagers can be caused by genetic predisposition, hormonal fluctuations, or underlying medical conditions.
Colouring hair
Hair dyeing can indirectly lead to excessive hair loss, especially when done frequently or using strong chemical treatments. These processes can weaken the hair, causing it to break more easily and appear thinner. In most cases, this does not result in permanent baldness, unless the hair follicles become severely damaged.
To minimise damage, it's important to care for your hair properly and follow your hairdresser’s advice. This helps keep your hair as healthy as possible after colouring.
Using too much heating tools
Frequent use of hair dryers, curling irons, and straighteners can weaken the hair, making it dry, brittle, and prone to breakage. Dermatologists warn that excessive heat can damage the hair shaft and leave hair more vulnerable. This can lead to breakage and, in some cases, even hair loss.
If you notice your hair becoming thinner or breaking more easily, it may be time to adjust your styling routine and reduce your use of heat. Limiting heat exposure helps maintain stronger, healthier hair over time.
Tiredness
Hair loss and fatigue can be closely linked. If you’re experiencing both, it may indicate a deficiency in essential nutrients, such as iron. Iron plays a vital role in the production of red blood cells, which transport oxygen to your cells and provide energy. A lack of iron can lead to extreme tiredness, pale skin, headaches, difficulty concentrating, cold hands & feet and even hair loss.
Hair loss and fatigue can be closely linked. If you’re experiencing both, it may be a sign of a deficiency in important nutrients, especially iron. Iron plays a key role in making red blood cells, which carry oxygen around your body and give you energy. Without enough iron, you may feel very tired, have pale skin, headaches, trouble concentrating, cold hands and feet, and even notice more hair falling out. This link between iron deficiency and hair loss is supported by scientific studies and health organisations like the NHS and Mayo Clinic also list hair loss as a possible symptom of iron deficiency.
Hair loss caused by iron deficiency is usually temporary and can improve once iron levels are restored. Deficiencies in other nutrients, such as B vitamins, zinc, and vitamin D, can also contribute to both fatigue and hair loss.
Rapid weight loss
Rapid weight loss, restrictive diets, and weight loss surgery can lead to hair loss due to deficiencies in essential nutrients and hormonal changes. Additionally, the physical and emotional stress of losing weight can contribute to hair shedding, often resulting in telogen effluvium, a common and temporary form of hair loss.
This type of hair loss typically occurs a few months after the weight loss and usually resolves once the body receives adequate nutrients again and stress levels decrease.
Medical conditions
There are many illnesses and conditions that can lead to hair loss. While many can be treated with dermatologist-recommended hair growth products, others may be more complex to manage. Some medical conditions have already been discussed earlier in this guide, but here are additional conditions known to cause hair loss:
- Tinea capitis
- Seborrhoeic dermatitis
- Medications and supplements (Hair loss may occur as a side effect due to disruption of the hair growth cycle or hormonal changes)
- Trichotillomania
- Cicatricial alopecia
- Alopecia areata
- Telegon Effluvium
- Lichen planopilaris (A variant of lichen planus that causes inflammation of the hair
- follicles, leading to hair loss)
- Sexually transmitted infections (STIs)
- Radiation therapy and chemotherapy as treatments for cancer
Want to know how these diseases and conditions lead to excessive hair loss?
Read all the details in our blog: Hair diseases and conditions.
Balding signs
Identifying the first signs of balding is key to slowing down or treating further hair loss. While it’s normal to shed 50 to 150 hairs per day, an increase beyond this may indicate the onset of hair thinning or balding. Wondering if you're experiencing excessive hair loss (alopecia)? Keep an eye out for the following signs:
- Receding hairline
- Thinning hair
- Visible scalp
- Itchy scalp
- Scaly patches
- Excessive shedding (Finding large amounts of hair in the shower drain, on your pillow, or in your hairbrush can often be a clear sign of excessive hair loss)
- Age-related hair loss (Becomes more noticeable as you get older)
Taking early action can help slow the progression of hair loss.
For a detailed explanation of these signs and potential solutions, read our guide: Early signs of balding.
Best methods to stimulate hair growth
Now that you’re aware of the various causes behind excessive hair loss, we’ll share practical tips and methods to help strengthen your hair and scalp and stimulate healthy hair growth.
Wash less frequently
Limit hair washing with shampoo to a minimum. The recommended washing frequency depends on your hair type:
- Fine or oily hair: daily or every other day
- Slightly dry hair: no more than 2 to 3 times per week
-
Curly or coily hair: no more than once a week
Make sure to use products specifically designed for hair growth. Always read the product descriptions carefully. Dermatologists recommend hair growth products that are free from sulfates, silicones and parabens, as these ingredients may contribute to excessive hair loss. Avoid vigorous scrubbing or scratching, as this can also lead to hair loss. Hair care products containing silicones and sulphates may worsen the problem.
Massage the scalp regularly
Scalp massage can stimulate hair growth by activating the hair follicles and improving blood circulation. This helps strengthen the hair roots and may reduce thinning.
Using a scalp massage brush not only promotes relaxation but also helps to remove flakes and product build-up, keeping the scalp healthier. Additionally, massaging the scalp boosts blood flow, enhancing the delivery of essential nutrients to the hair roots. When combined with a hair growth-stimulating shampoo or conditioner, it can positively impact hair density and vitality.
Want to learn more about techniques, benefits, and tools? Read the full blog: Scalp massage to stimulate hair growth.
Eat a healthy and balanced diet
You can also help prevent hair loss by leading a healthier lifestyle, ensuring your body gets what it needs. Getting enough protein, vitamins, and nutrients that support hair growth is essential for healthy hair. A balanced lifestyle can help reduce hair shedding.
There are many nutrients and vitamins that support healthy hair growth and can contribute to thicker, stronger hair.
Use nutrient-rich foods and vitamin supplements
To balance the levels of nutrients and vitamins in your body and combat deficiencies, include nutrient-dense foods and vitamin-rich supplements in your routine. The following are particularly important for supporting hair growth:
- Vitamin A
- B Vitamins – Such as B6, B8 and B12
- Vitamin C
- Vitamin D
- Vitamin E
- Iron
- Zinc
You can read more about how these vitamins and nutrients stimulate hair growth in the two in-depth blogs: Vitamins for hair growth and best nutrients for hair growth.
Proteins
Eat more protein, if your body doesn’t get enough, it can affect your natural hair growth. For example, if you’re vegan or vegetarian, you may need to increase the amount of protein you consume. Protein is important for hair growth because hair follicles are largely made of it.
Which foods can help or harm hair growth?
- Yoghurt
- Beans
- Eggs
- Poultry
- Nuts
- Salmon
- Walnuts
- Olive oil
- Leafy greens
- Citrus fruits
- Strawberries
- Egg yolks
- Spinach
- Lentils
Foods that may contribute to hair loss:
- Sweets
- Cakes
- Biscuits (includes sweets, cakes, and biscuits in general)
- Fish high in mercury, such as tuna and mackerel
- Fried foods
- Red meat
Curious why some foods support hair growth while others may hinder it? Discover all the details in our blog: best foods for hair growth!
Protect your hair while you sleep
Are you aware of what you sleep on at night? If not, there’s room for improvement. Protecting your hair during sleep can help prevent damage, which in turn may reduce hair loss and support longer hair
You can protect your hair by swapping your cotton pillowcase for a satin or silk one. Braiding your hair before bed time can also help. Both options offer a protective effect (this means they can help prevent hair loss) although they don’t necessarily stimulate hair growth.
Watch out for myths
Now that you know what can help stimulate hair growth, we also want to caution you about the myths you might come across online. Experiencing excessive hair loss can affect your confidence, making it tempting to try anything and everything. To avoid unnecessary effort, read our blog on hair loss: facts vs myths and stay informed.
What’s next?
We hope this guide has provided you with valuable insights into hair growth, hair loss, and the best ways to care for your hair. Ready to actively promote your hair growth? Explore our Stimulating Hair Growth collection for a complete range of products specifically designed to stimulate hair growth.
