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Does Caffeine Cause Hair Loss?

Knox Beasley, MD

Reviewed by Knox Beasley, MD

Written by Steph Coelho

Published 03/25/2022

Updated 07/27/2024

Coffee, espresso, tea, colas, and energy drinks all contain caffeine, and if they’re your regular beverages of choice, you might be wondering: Does caffeine cause hair loss?

The good news is that you don’t need to switch to decaf to prevent hair loss. There’s no evidence linking caffeine intake and hair loss. 

That said, caffeine might impact the hair growth cycle.

Below, we answer the question, “Is coffee bad for your hair?” by reviewing the research around caffeine and hair loss. We also explore the potential hair benefits of caffeine and how to address hair thinning.

There’s limited scientific research on how caffeine affects human hair growth or hair loss. 

And ultimately, there’s no firm evidence to suggest a link between caffeine and hair loss. 

What we do know is that some early lab studies (also known as in vitro studies) have shown a relationship between caffeine and baldness-inducing male sex hormones (androgens) like dihydrotestosterone (DHT)

According to research, caffeine curbs the expression of certain proteins affected by testosterone, which may encourage healthy hair growth.

Caffeine’s ability to impact androgen-related hair follicle growth had a significant effect on hair follicles of people living with androgenic alopecia, also known as androgenetic alopecia or male pattern baldness.

In the lab study, researchers topically applied caffeine to hair follicles and saw an increase in the anagen (hair growth) stage phase and hair shaft elongation (growth).

Keep in mind that this was a lab study and not a clinical trial, so we can’t draw any concrete conclusions from the results. 

Too much caffeine, on the other hand, might be a problem for your health (and potentially your hairline), but your morning cup of coffee won’t trigger hair fall. 

So, there are no studies linking caffeine to hair loss, but is coffee good for your hair?

Regrow Hair

All about hair, here

Can a daily green or black tea drink improve your hairline?

There’s no current consensus on whether there’s a direct link between caffeine and the hair growth cycle. While green tea may have hair health benefits, research into caffeine's benefits for hair growth is still in the early stages. 

Some evidence suggests that some naturally caffeinated products, like green tea, may improve hair health.

One 2019 review suggests green tea may help control scalp oil production, prevent dandruff, and soften hair follicles, though it’s unclear whether caffeine itself is responsible for green tea’s ability to stimulate hair regrowth.

Another study showed that a topical application of caffeine in people with androgenic alopecia helped improve skin barrier function.

However, further studies are needed to confirm the research and clarify the relationship between caffeine and scalp health.

If you’re wondering whether to buy a shampoo or other hair care product with caffeine in the ingredients list, there’s no proof that caffeine can damage your hair. But there’s also limited evidence that caffeine will boost hair growth.  

Will you join thousands of happy customers?

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Here’s some good news: If you’re worried about hair loss, there are some proven methods to help stop that hair loss and stimulate regrowth. 

FDA-approved treatments for hair loss include:

Finasteride

Finasteride has been shown to block the hormone dihydrotestosterone (DHT) from causing male pattern hair loss. 

Clinical trials show that daily finasteride can reduce DHT levels by about 90 percent when taken as directed. 

Minoxidil

The topical hair growth medication minoxidil (Rogaine®), available in a foam or solution, can help stimulate hair growth by shortening the telogen or dormant phase of hair growth and causing your hair follicles to enter the anagen growth phase. 

You don’t need a prescription for it, either. 

You can get the benefits of both research-backed medications in our topical finasteride & minoxidil spray.

Other Products

There’s also evidence to suggest that certain supplements and essential vitamins can promote growth or reduce thinning. Some shampoo ingredients may support your hair goals, too. 

Read our guide, “What to Look for in a Men’s Hair Loss Shampoo,”if you’re interested in learning more about your shampoo options for a receding hairline.

Hair loss treatments, delivered

More research is needed on the effects of caffeine on the hair growth cycle. But here’s what we know about the relationship between hair loss and caffeine so far:

  • Early lab studies show caffeine might influence DHT levels. DHT is a male sex hormone that plays a role in male pattern baldness. Some lab-based research suggests caffeine might help protect hair follicles. 

  • Caffeinated drinks like green and black tea might help with healthy hair growth. That said, there’s no evidence that the caffeine in these drinks is the reason for better hair results.

  • Caffeine won’t cause you to lose hair. Can too much caffeine cause hair loss? Probably not. Unless your diet consists of only caffeinated drinks, your daily coffee habit is unlikely to be the culprit for your receding hairline.

If you’re experiencing hair thinning, it’s best to talk with a healthcare professional about your concerns and hair loss treatment options. Addressing hair loss sooner rather than later can help prevent permanent hair loss due to male pattern baldness. 

7 Sources

  1. Minoxidil topical: MEDLINEPLUS drug information. (n.d.). Retrieved February 13, 2021, from https://medlineplus.gov/druginfo/meds/a689003.html.
  2. Marks, L. S., Hess, D. L., Dorey, F. J., Luz Macairan, M., Cruz Santos, P. B., & Tyler, V. E. (2001). Tissue effects of saw palmetto and finasteride: use of biopsy cores for in situ quantification of prostatic androgens. Urology, 57(5), 999–1005. https://pubmed.ncbi.nlm.nih.gov/11337315/.
  3. Zito PM, Bistas KG, Syed K. Finasteride. [Updated 2020 Oct 27]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK513329/.
  4. Rafi, A. W., & Katz, R. M. (2011). Pilot Study of 15 Patients Receiving a New Treatment Regimen for Androgenic Alopecia: The Effects of Atopy on AGA. ISRN dermatology, 2011, 241953. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3262531/.
  5. Fischer, T. W., Herczeg-Lisztes, E., Funk, W., Zillikens, D., Bíró, T., & Paus, R. (2014). Differential effects of caffeine on hair shaft elongation, matrix and outer root sheath keratinocyte proliferation, and transforming growth factor-β2/insulin-like growth factor-1-mediated regulation of the hair cycle in male and female human hair follicles in vitro. The British journal of dermatology, 171(5), 1031–1043. https://pubmed.ncbi.nlm.nih.gov/24836650/.
  6. Koch, W., Zagórska, J., Marzec, Z., & Kukula-Koch, W. (2019). Applications of Tea (Camellia sinensis) and its Active Constituents in Cosmetics. Molecules (Basel, Switzerland), 24(23), 4277. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6930595/.
  7. Bansal, M., Manchanda, K., & Pandey, S. S. (2012). Role of caffeine in the management of androgenetic alopecia. International journal of trichology, 4(3), 185–186. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3500065/.
Editorial Standards

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. See a mistake? Let us know at [email protected]!

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.

Knox Beasley, MD

Dr. Knox Beasley is a board certified dermatologist specializing in hair loss. He completed his undergraduate studies at the United States Military Academy at West Point, NY, and subsequently attended medical school at Tulane University School of Medicine in New Orleans, LA. 

Dr. Beasley first began doing telemedicine during his dermatology residency in 2013 with the military, helping to diagnose dermatologic conditions in soldiers all over the world. 

Dr. Beasley is board certified by the American Board of Dermatology, and is a Fellow of the American Academy of Dermatology.

Originally from Nashville, TN, Dr. Beasley currently lives in North Carolina and enjoys spending time outdoors (with sunscreen of course) with his wife and two children in his spare time. 

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  • Dermatology Residency. San Antonio Uniformed Services Health Education Consortium

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