How Can You Make Your Hair Grow Faster? Here’s What Science Actually Says Works

Every man wants healthy, strong hair that grows well. Especially if you notice your hair is getting thinner or seems to be growing more slowly than it used to. For many, the question remains: can you actually speed up hair growth? The short answer is yes. But you need to know what really influences your hair growth cycle—and what’s just marketing nonsense. In this blog, you’ll learn what really works to stimulate hair growth.

How does hair actually grow?

Hair grows from hair follicles, small structures deep within the scalp that each go through their own growth cycle. That cycle consists of three phases: the anagen phase (growth phase lasting two to six years), the catagen phase (short transitional phase), and the telogen phase (resting phase lasting several months). After the resting phase, the hair falls out and a new cycle begins. Under normal circumstances, about 85 to 90 percent of your hair is in the growth phase at any given time.

It is completely normal to lose fifty to a hundred hairs a day. As long as an equal amount of new hair grows in, there is nothing to worry about. Only when that balance is disrupted for a prolonged period do we speak of hair loss or slowed hair growth.

What determines how fast your hair grows?

Hair growth and its speed are no coincidence. Various factors control the activity of your hair follicles. Genetic predisposition plays a dominant role: in some men, the hair follicles are naturally more active and robust than in others. Hormones also play a major role. In particular, the hormone DHT (dihydrotestosterone), a derivative of testosterone, causes hair follicles to shrink and shortens the growth phase in genetically susceptible men. As you age, the hair growth cycle also naturally slows down: hair follicles become less active and the growth phase becomes shorter.

In addition to these biological factors, lifestyle and health play an important supporting role. Deficiencies in certain nutrients such as iron, zinc, and biotin can inhibit hair production. Chronic stress drives a large portion of the hair into the resting phase prematurely, resulting in increased hair loss weeks to months later. This is also known as telogen effluvium. You can read more about stress-related hair loss and how to recognize it in the Fellos knowledge base.

What can you do to stimulate hair growth?

You cannot significantly extend the growth phase of individual hairs through lifestyle changes, but you can optimize conditions so that hair follicles can function optimally. The basics are simple: eat a varied, protein-rich diet, because hair consists largely of a protein called keratin. To produce keratin, your body needs the amino acids from your food. Adequate protein intake from meat, fish, eggs, legumes, and nuts supports the production of new hair.

Also, make sure to drink enough water. Chronic dehydration directly affects the health of the scalp and can slow down the hair growth cycle. High-quality sleep is just as important. If you consistently get too little sleep, your hair follicles don’t get enough time to recover. According to the NIA, stress is also a factor that inhibits hair growth. Reducing chronic stress through exercise, breathing exercises, and sufficient relaxation helps keep the hair growth cycle stable. Finally, avoid excessive heat from hair dryers or flat irons, and do not use harsh products that dry out the hair (such as those with a high alcohol content), as these accelerate hair breakage and worsen the hair’s condition without actually stimulating growth.

Which products actually work and which don’t?

The market for hair growth products is vast, and manufacturers make big promises, but the scientific evidence supporting many shampoos, serums, and supplements is limited. A product that makes hair appear shinier or fuller does not alter the hair growth cycle itself. Hair follicles do not respond to marketing claims, but to biological signals. That does not mean that hair care is pointless, because a healthy scalp and well-conditioned hair certainly form a good foundation. But anyone who truly wants to change the speed or density of hair growth needs treatments that influence the hair follicles at a biological level.

Which medical treatments actually stimulate hair growth?

There are scientifically backed options that have been proven to influence hair growth in men with a genetic predisposition to hair loss. One of these is finasteride, a daily tablet that inhibits the enzyme 5-alpha-reductase. This is the enzyme that converts testosterone into DHT, the hormone we discussed earlier. By lowering DHT levels, finasteride protects hair follicles from further shrinkage and can normalize the hair growth phase. The second option is minoxidil, a lotion applied directly to the scalp. Minoxidil improves blood flow to the hair follicles and extends the active growth phase, making existing and dormant follicles more active.

A clinical study published in Dermatologic Therapy shows that the combination of both agents resulted in significant improvement in 94.1 percent of participants, significantly higher than finasteride (80.5%) or minoxidil (59%) alone. Fellos prescribes this combination therapy under medical supervision. You can read more about finasteride and minoxidil as alternatives to hair transplantation here.

It is important to note that side effects of finasteride can occur in rare cases, including decreased libido, erectile dysfunction, or mood changes. This occurs in less than one percent of users and usually resolves after discontinuing treatment.

How long does it take to see results?

Hair restoration requires patience. The hair growth cycle is slow and cannot be rushed. Most men who start taking finasteride or minoxidil see the first improvements after three to six months of consistent use. Visible regrowth in bald spots is usually only noticeable after six to twelve months. If you stop treatment, you will lose the results achieved over time, as the underlying biological processes revert.

This requires perseverance, but for most men, it’s easy to incorporate into daily life. At Fellos, you receive ongoing guidance from a doctor, so you can ask questions and have your treatment plan adjusted if necessary.

What if your hair growth doesn’t improve?

If hair growth doesn’t occur or hair loss persists despite lifestyle changes, it’s wise to have it examined to see if hereditary or hormonal factors are involved. Androgenetic alopecia (hereditary baldness) is the most common cause of structural hair loss in men and responds well to medical treatment, provided it is started early enough. The sooner you start, the greater the chance of preserving and restoring your hair. It is therefore not a wise strategy to wait a long time in the hope that it will resolve on its own.

Get your hair growing again with the help of Fellos

Faster hair growth starts with understanding what truly influences the hair growth cycle and then making the right choices. Lifestyle lays the foundation, but if there’s more going on, proven medical treatments like finasteride and minoxidil offer the best chance of visible results. At Fellos, you get expert guidance, safe treatments, and honest advice. All online and completely discreet. Start your intake today and discover what’s possible for your hair.

‍