Hair Growth For Men: Science-Backed Tips For Fuller Hair

But that doesn't mean it's impossible to naturally boost hair health. Ahead, learn about holistic remedies for promoting hair growth in men, from supplements to light therapy.

Possible causes for thinning hair include:

Additionally, sometimes, underlying issues can lead to hair thinning. If you suspect your hair shedding may be caused by something other than the above, be sure to check in with your health care professional.

Fortunately, there are ways to naturally support hair fullness:

Aside from feeling oh-so-good, scalp massages can support hair growth via mechanical stimulation of hair follicles, according to research6. Additionally, the practice increases blood flow to the scalp, further contributing to hair health. It also doesn't hurt that scalp massages can help relax the body and mind, potentially easing some of the stress associated with hair thinning.

Another option is pumpkin seed oil, which has a comparable effect. Case in point: A 2021 study found that the oil works just as well as minoxidil. According to the researchers, pumpkin seed oil decreases hair shaft diversity7, a scenario in which some hair follicles become smaller in size.

Some beauty- and hair-focused supplements may improve the overall health of the scalp and hair in general—which may contribute to fuller-looking hair. Collagen supplements, for example, are made of amino acid peptides, which are the building blocks of the protein keratin (as well as elastin and collagen, their namesake).* If you're looking for the top options to try, see our guide to the best collagen supplements.

Thus, if your hair loss woes are rooted in nutritional gaps, taking hair supplements can help, says Dina Strachan, M.D., board-certified dermatologist and director of Aglow Dermatology.* But take note: According to Strachan, if you don't have an actual nutrient inadequacy relevant to hair health, these supplements may not make a difference (in terms of hair growth, at least). That said, if you suspect you're low in a certain nutrient, chat with your practitioner before investing in hair supplements.

Another solution is red light therapy, which is often available at spas and some dermatology offices. As indicated by one research review, the remedy can promote hair growth in men and women9 by helping hair follicles enter the anagen phase. Additionally, according to Strachan, red light therapy can reduce oxidative stress, increase blood flow, and decrease DHT, a hormone derived from testosterone that's involved in hair loss in some people. These effects can help minimize factors involved in hair loss, thereby supporting healthy hair growth.

Whether you're losing a few strands or your comb is looking much fuller post-brush, it's a good idea to visit a dermatologist, trichologist, or other hair professional. As Strachan notes, "Hair loss can just be something that runs in the family—or it can be a sign of something more serious." By seeking professional guidance, you can receive personalized recommendations based on your hair and health history. After all, "there are many [remedies] that can be started right away to slow the thinning process," says Yates. Seeing a derm ASAP can protect the hair you do have and increase your chances of successful hair growth.

If you're super serious about hair growth, platelet-rich plasma (PRP) injections might be just what you need. As Yates explains, PRP is a process in which your dermatologist takes a sample of your blood and spins it in a centrifuge, which is a machine that separates platelets from other blood components. (Platelets contain growth factors that stimulate your body's healing properties, says Yates.) Next, your dermatologist injects these platelets into your scalp, which stimulates your body's healing response. In turn, "the hair follicles [are] re-energized to grow healthy hair again," according to Yates. 

Hair loss in men is often due to aging and genetics. Additionally, simple factors like stress and nutritional status can also contribute to hair thinning. Luckily, natural remedies like scalp massage, supplements, and hair oils can promote healthy hair growth in men.* And a professional can also provide therapies like PRP injections and red light therapy. For additional tips on hair growth, check out our stylist-approved guide to fuller hair.