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Does Collagen Help Hair Growth?

Jill Johnson

Reviewed by Jill Johnson, FNP

Written by Geoffrey Whittaker

Published 12/12/2021

Updated 12/13/2021

Let’s talk about the beauty industry’s favorite protein: Collagen. As proteins go, this one is big business — and it’s the most abundant protein in your body. 

Collagen supports your skin elasticity (among many other functions in the body), and helps it look healthier. 

But what about hair? Can a collagen supplement do anything for your mane? 

Truth be told, this is a good time to be skeptical, because as hair supplements go, collagen might not be your strongest bet. 

Hair growth and hair loss are complicated bodily processes — and while it would be great to hear that collagen is your hair's BFF, life isn't a rom com. 

Collagen supplement benefits might include hair growth — that’s a possibility. But there’s not a lot of substantiated evidence to support that.

Whether you apply collagen by injection or consume another form of collagen daily, it may offer plenty of benefits. 

Thicker hair might be one of them, but if that is your primary goal, you may want to consider additional or alternative options, like minoxidil. 

Read on to learn more about collagen, and how it might relate to hair health and hair growth.

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The best place to start talking about collagen’s role in your body is with your skin health.

Healthy skin is a thick and complicated web of many moving parts, including structural proteins. There are three that arguably matter the most: collagen, elastin and keratin. 

Keratin is basically your body’s equivalent of armor — it’s a hard, barrier protein that functions like a mesh weave for the purpose of protecting you. 

Elastin is more like a mesh that fastens your cells together, and returns them to their original positions so they don’t get “stuck” when your skin stretches. 

Collagen, meanwhile, is the most plentiful protein within your skin (and elsewhere), and it is the largest connective tissue component in your skin (generally speaking). 

The purpose of connective tissue is to keep your skin firm and protect it from all forms of damage. These might include fine or deep lines, otherwise known (and not typically loved) as wrinkles. Check our guide on what peptides can do for your skin.

The sun can also contribute to skin damage, as can air quality and an unbalanced diet. Even sleeping with your face down on the pillow can lead to wrinkles. 

You get collagen from a variety of sources, including your own collagen production and the food you eat. 

Foods that contain a source of natural collagen like veal, lamb, beef, pork, certain game meats, bone broth and poultry are great ways to support your dietary intake. 

But how much does this affect your cosmetic collagen levels? It’s unclear.

Scientists haven’t fully established how the link works between what you eat and how your skin looks. 

However there is research showing that increased collagen intake can help support joint health. 

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If you’re wondering about the benefits of collagen for hair growth because you’ve been seeing hair loss (say in the shower drain in each morning) — worry not. 

The typical person’s head has more than 100,000 hairs and sheds around 100 a day on average.

Your hair’s growth cycle is broken into three phases, and while they can be interrupted by a number of conditions and factors, collagen deficiency is not typically one of them, nor a reason why a hair follicle fails to produce.

If anything is going wrong with your hair, it’s likely not because of a collagen deficiency. And in the same way, there’s little information to suggest a link between collagen and benefits to your hair. 

While there’s not much of a science-backed link between healthy hair and collagen to discuss now, some early research has shown benefits worth exploring. 

One study found that sixteen weeks of consuming daily collagen supplements helped study participants increase hair thickness and cell growth — the latter by more than 30 percent. 

But this study hasn’t been replicated, so the jury is out on whether or not the results would be consistent. 

There are plenty of benefits with collagen, yet if you need to address hair loss concerns, there are better ways to do it.

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Collagen may benefit many parts of your body but it’s not a treatment for hair loss. In fact, there are much better, dedicated hair loss treatment options for women on the market right now.

Take minoxidil, for example. Topical minoxidil can be prescribed for hair regrowth to increase the blood flow to your hair follicles, which can encourage them to grow hair again. 

A study of minoxidil for men revealed that some people experienced as much as an 18 percent increase in growth over a 48-week period. The same benefits are just as likely for women. 

Nutritional deficiencies can also cause some types of hair loss. 

These are generally best addressed by dietary changes and the inclusion of a multivitamin (like hers’ Biotin Gummy Multivitamins) in your daily routine.

If you’re experiencing hair loss, your best bet is to consult with a healthcare professional about your hair issues. 

You may have an underlying health condition causing your hair to thin. It could also be due to stress. 

It’s also a good idea to consult with your healthcare provider before taking any type of supplement. 

And when it comes to hair growth, they might suggest changes to your diet, exercise and quitting any habits like smoking which could be contributing to the state of your mane. 

Hair loss can be a lot to handle, so a healthcare professional can be your first line of defense. 

If you’re looking for more support, there are hair care products specially designed to help you thicken your hair. You also may want to check out hers’ Hair Growth Kit to narrow your options. 

8 Sources

Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references.

  1. Puizina-Ivić N. (2008). Skin aging. Acta dermatovenerologica Alpina, Pannonica, et Adriatica, 17(2), 47–54. Retrieved from
  2. Zhang, S., & Duan, E. (2018). Fighting against Skin Aging: The Way from Bench to Bedside. Cell transplantation, 27(5), 729–738. . Retrieved from
  3. Oesser, S. (n.d.). The oral intake of specific bioactive collagen peptides has a positive effect on hair thickness. International Journal on Nutraceuticals, Functional Foods and Novel Foods. Retrieved November 8, 2021, from
  4. Alcock, R. D., Shaw, G. C., & Burke, L. M. (2019). Bone Broth Unlikely to Provide Reliable Concentrations of Collagen Precursors Compared With Supplemental Sources of Collagen Used in Collagen Research. International journal of sport nutrition and exercise metabolism, 29(3), 265–272.
  5. Bello, A. E., & Oesser, S. (2006). Collagen hydrolysate for the treatment of osteoarthritis and other joint disorders: a review of the literature. Current medical research and opinion, 22(11), 2221–2232.
  6. Suchonwanit, P., Thammarucha, S., & Leerunyakul, K. (2019). Minoxidil and its use in hair disorders: a review. Drug design, development and therapy, 13, 2777–2786. Retrieved from
  7. Burg, D., Yamamoto, M., Namekata, M., Haklani, J., Koike, K., & Halasz, M. (2017). Promotion of anagen, increased hair density and reduction of hair fall in a clinical setting following identification of FGF5-inhibiting compounds via a novel 2-stage process. Clinical, cosmetic and investigational dermatology, 10, 71–85. Retrieved from
  8. Poljšak, B., & Dahmane, R. (2012). Free radicals and extrinsic skin aging. Dermatology research and practice, 2012, 135206.

This article is for informational purposes only and does not constitute medical advice. The information contained herein is not a substitute for and should never be relied upon for professional medical advice. Always talk to your doctor about the risks and benefits of any treatment. Learn more about our editorial standards here.

Jill Johnson, FNP

Dr. Jill Johnson is a board-certified Family Nurse Practitioner and board-certified in Aesthetic Medicine. She has clinical and leadership experience in emergency services, Family Practice, and Aesthetics.

Jill graduated with honors from Frontier Nursing University School of Midwifery and Family Practice, where she received a Master of Science in Nursing with a specialty in Family Nursing. She completed her doctoral degree at Case Western Reserve University

She is a member of Sigma Theta Tau Honor Society, the American Academy of Nurse Practitioners, the Emergency Nurses Association, and the Air & Surface Transport Nurses Association.

Jill is a national speaker on various topics involving critical care, emergency and air medical topics. She has authored and reviewed for numerous publications. You can find Jill on Linkedin for more information.

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