Green tea contains compounds that may support hair health in theory, but there’s no strong clinical evidence that drinking it reduces hair loss or regrows hair. While it’s a healthy drink, proven treatments such as minoxidil, finasteride, and specialist clinic therapies remain far more effective options for treating hair loss.
Learn what the evidence really says about green tea and hair loss: its potential benefits, limitations, safety, and how it compares with proven hair loss therapies. You’ll also discover when it’s worth seeking professional advice for effective, evidence-based hair loss treatment.
Key takeaways
Green tea contains catechins, antioxidants, and caffeine, which may support hair health and inhibit hormone activity in laboratory studies, but these effects haven’t yet been confirmed in people.
Drinking 1-2 cups of green tea daily is safe and may offer general health benefits, but there’s no evidence that increasing intake improves hair growth.
Topical green tea rinses may provide limited benefits, though they are unlikely to match the effectiveness of clinically proven caffeine formulations or proven hair loss treatments.
Green tea supplements are not recommended for hair loss due to a lack of evidence and the potential risk of side effects, particularly at high doses.
If you’re noticing mild hair loss, early intervention offers the best chance of preserving your hair. The Wimpole Clinic can assess the cause and recommend evidence-based treatments before your hair loss becomes more advanced.
Can green tea really help reduce hair loss?
Green tea contains lots of nutritional compounds that have been associated with slowing hair loss [1-3]. But there’s no conclusive evidence that simply drinking a cup of green tea every day will have a measurable impact on your hair. So while green tea might have some theoretical hair benefits, it’s important not to overstate them.
Let’s explore how green tea can help with hair loss and how to maximise your potential results.
How does green tea help with hair loss?
Green tea contains several compounds that are good for your hair. Arguably the most important of these is epigallocatechin-3-gallate (EGCG) — a catechin that’s been shown to inhibit the activity of the 5 alpha-reductase enzyme in lab studies [1-2]. This enzyme converts testosterone to dihydrotestone (DHT), the hormone that drives the development of male pattern baldness.
But this hasn’t been proven in actual people yet — only in lab studies. So while the mechanism works in theory, the real world impact is yet to be seen.
Green tea also contains caffeine, which has been shown to help slow hair loss when applied topically [4-5]. Unfortunately, there’s no evidence that drinking coffee or other caffeinated drinks (like green tea) will offer the same benefits. And green tea has a much lower concentration of caffeine — approximately 26 times less — than a proven 0.2% caffeine solution used in clinical studies [5-6]. So even topical green tea rinses are unlikely to create similar results.
Green tea is well-known for its antioxidant and anti-inflammatory properties, and these could have a positive impact on hair growth. ECGC and other catechins in green tea have been shown to have antioxidant effects, enhance cell proliferation, and alleviate inflammation in human follicle dermal papilla cells [3].
Antioxidants help reduce the risk of oxidative stress-induced hair loss (which is often a factor in pattern baldness and alopecia areata), while anti-inflammatory agents can reduce hair loss stemming from inflammatory scalp conditions like psoriasis and dermatitis.
How much green tea do I need to drink to see the benefits for my hair?
The evidence supporting the use of green tea for hair loss is mostly theoretical, so there’s no indication that drinking a specific amount of green tea will help boost hair growth. That’s why it’s best to stick to a moderate amount of green tea (1-2 cups) a day, rather than increasing your intake in the hope of boosting hair growth.
Plenty of other hair loss treatments — such as minoxidil, finasteride, caffeine shampoos, and even some essential oils — are much more likely to generate good hair growth outcomes compared with green tea.
What types of hair loss is green tea helpful for?
Green tea may be helpful for those affected by male or female pattern hair loss, thanks to its DHT-suppressing and antioxidant properties. It could also be beneficial if your hair loss is related to oxidative stress or follicle inflammation, though don’t expect too much. There’s not much evidence that drinking or applying green tea to your scalp will have a significant visible effect on your hair.
Does green tea offer any other benefits for hair?
While study samples are small, there are indications that drinking green tea can help provide skin protection that may result in positive outcomes for your hair. For example, one study found that drinking a litre of green tea (i.e. 980 mg of EGCG) every day for 12 weeks led to increased UV protection and circulation [7].
Better blood flow and UV hair protection may help boost hair growth indirectly, but these outcomes haven’t been clinically studied.
Should you drink green tea or apply it topically for best hair growth results?
Because most evidence surrounding green tea for hair growth is based on lab studies, it’s unclear whether it’s better to drink green tea or apply it directly to your scalp. So what do we know?
Anecdotally, some people have seen success with green tea rinses, which involve brewing green tea and applying it directly to your scalp with a pipette or dropper. There’s not much evidence for this approach, aside from a handful of studies supporting the use of topical caffeine for hair growth. Green tea rinses may offer a few limited benefits if you do them consistently, but don’t expect miracles.
Drinking green tea is more likely to offer tangible benefits like improved UV protection, skin hydration, and blood flow, which can translate to enhanced hair health.
Should I take green tea supplements to speed up results?
There’s virtually no evidence that green tea supplements can help boost hair growth, and there are reports of toxicity in those taking high doses of these supplements. So it’s best not to take green tea supplements for hair growth, since there’s no evidence they work and they can cause dangerous side effects.
There’s not much evidence that any nutritional supplements can help with hair loss, unless you have a clinical deficiency. True nutritional deficiencies are rare in the Western world, so supplements are rarely the answer to hair loss problems.
Are there any risks or side effects of green tea?
Not if you stick to drinking green tea in moderation. Green tea is generally safe to consume even in relatively high volumes, with one clinical study inviting subjects to drink a litre a day for 12 weeks [7].
While there have been some reports of liver damage and gastrointestinal problems, these are usually associated with green tea extract supplements containing 700–2,000 mg a day, rather than tea infusions [8-9].
When will I see hair growth results from drinking green tea?
There’s no guarantee that you’ll see improved hair growth or slowed hair loss from increasing your green tea consumption, so there’s no specific timeframe for results. One study found that photoprotection and circulation improved within 12 weeks, but it would likely take much longer for these results to transfer to improved hair growth.
Green tea vs other hair loss treatments
If you’re looking for visible hair growth, it’s best to seek out proven hair loss treatments that have been shown to work across multiple independent large-scale studies. No studies have directly compared the following treatments with green tea for hair loss, but each has a much larger body of evidence to support its use:
- Minoxidil — a topical treatment that can help improve symptoms of pattern baldness, telogen effluvium, traction alopecia, and alopecia areata.
- Finasteride — An oral prescription drug that suppresses DHT production systemically, making finasteride the most popular treatment for male pattern baldness [10].
- Dutasteride — Dutasteride works in a similar way to finasteride, but hasn’t yet been licensed, so can only be obtained off-label. Like finasteride, it’s only used to treat pattern baldness, and isn’t usually suitable for women.
- Caffeine shampoos — Caffeine shampoos can reduce symptoms of hair loss when used consistently over several months.
- Microneedling — This DIY derma rolling for hair growth technique involves creating dozens of tiny wounds, which help boost follicle cell proliferation and increase absorption of topical treatments [11].
- Clinic treatments — Treatments like PRP hair therapy and low level laser therapy cost a little more, but offer additional treatment pathways that aren’t accessible at home.
- Hair transplantation — FUE and FUT hair transplants are the most effective solutions for permanent hair loss, especially if you’re experiencing moderate to extensive balding.
Find hair loss treatments that really work with the Wimpole Clinic
Green tea is very unlikely to have a significant impact on your hair. So if you’re serious about sparking hair regrowth, it’s best to find treatments that really work. That’s where the Wimpole Clinic comes in.
The team at our award-winning hair transplant clinic can help you find the best possible treatment combination for your hair loss, including licensed, off-label, and in-clinic therapies. So if you’re done with home remedies and DIY treatments, book a consultation at the Wimpole Clinic today. We have clinic locations across the UK and beyond, so you won’t need to travel far to get optimal hair loss advice and treatment.
FAQs
Find out more about green tea and hair loss in these frequently asked questions.
How can you apply green tea to your hair to promote growth?
The best way to apply green tea to your scalp is in a scientifically formulated scalp serum or spray that contains green tea extract. These topical formulations contain safe levels of green tea and often contain other complementary ingredients to promote hair health.
If you’re looking for a DIY green tea rinse, brew a strong green tea: two teabags in 100 ml of boiling water for around 5 minutes. Let the water cool, then use a dropper to apply the liquid to your scalp.
Which brand of green tea is best for hair?
Of regular commercially available brands of green tea, one study found that PureLeaf Green Tea had the highest concentration of EGCG and caffeine, followed by Lipton and Twinings [12]. However, researchers also noted that the differences weren’t statistically significant, so you’re probably best choosing the tea you enjoy the most, as you’re more likely to continue drinking it.
Will black tea help with hair loss?
Animal studies have shown that black tea extracts may help improve symptoms of hair loss, but there’s very little evidence that demonstrates the same effects in human subjects so far [13-14].
Is it possible to drink too much green tea?
Yes, but the threshold is fairly high. If you drink green tea in moderation — no more than 2-3 cups per day — it’s very unlikely that you’ll experience negative side effects.
- Kwon, O. S., Han, J. H., Yoo, H. G., Chung, J. H., Cho, K. H., Eun, H. C., & Kim, K. H. (2007). Human hair growth enhancement in vitro by green tea epigallocatechin-3-gallate (EGCG). Phytomedicine, 14(7–8), 551–555. https://doi.org/10.1016/j.phymed.2006.09.009.
- Kanlayavattanakul, M., Khongkow, M., Chanthanam, K., Yuen, G. K.-W., Tsim, K. W.-K., Lourith, N., Chaikul, P., & Chueamchaitrakun, P. (2025). Catechins-rich tea extract and its functional properties mitigating hair loss. Discover Food, 5, Article 406. https://doi.org/10.1007/s44187-025-00698-8.
- Noviani, V., Thauresia, S., Apriani, E. F., & Simanjuntak, P. (2019). Hair growth promoting activity of green tea leaves (Camellia sinensis L.) ethanolic extract. Majalah Obat Tradisional, 24(2), 104–109. https://doi.org/10.22146/mot.44053.
- Szendzielorz, E., & Spiewak, R. (2025). Caffeine as an Active Ingredient in Cosmetic Preparations Against Hair Loss: A Systematic Review of Available Clinical Evidence. Healthcare (Basel, Switzerland), 13(4), 395. https://doi.org/10.3390/healthcare13040395.
- Dhurat, R., Chitallia, J., May, T. W., Jayaraaman, A. M., Madhukara, J., Anandan, S., Vaidya, P., & Klenk, A. (2017). An Open-Label Randomized Multicenter Study Assessing the Noninferiority of a Caffeine-Based Topical Liquid 0.2% versus Minoxidil 5% Solution in Male Androgenetic Alopecia. Skin pharmacology and physiology, 30(6), 298–305. https://doi.org/10.1159/000481141.
- European Food Information Council. (2024, July 31). Caffeine levels in different foods and drinks. https://www.eufic.org/en/healthy-living/article/caffeine-levels-in-different-foods-and-drinks.
- Heinrich, U., Moore, C. E., De Spirt, S., Tronnier, H., & Stahl, W. (2011). Green tea polyphenols provide photoprotection, increase microcirculation, and modulate skin properties of women. The Journal of nutrition, 141(6), 1202–1208. https://doi.org/10.3945/jn.110.136465.
- Grajecki, D., Ogica, A., Boenisch, O., Hübener, P., & Kluge, S. (2022). Green tea extract-associated acute liver injury: Case report and review. Clinical liver disease, 20(6), 181–187. https://doi.org/10.1002/cld.1254.
- Mead M. N. (2007). Temperance in green tea. Environmental health perspectives, 115(9), A445. https://doi.org/10.1289/ehp.115-a445a.
- International Society of Hair Restoration Surgery. (2025, May). 2025 ISHRS practice census results [Report]. International Society of Hair Restoration Surgery. https://ishrs.org/wp-content/uploads/2025/05/report-2025-ishrs-practice-census_05-12-25-final.pdf.
- Kumar, M. K., Inamadar, A. C., & Palit, A. (2018). A Randomized Controlled, Single-Observer Blinded Study to Determine the Efficacy of Topical Minoxidil plus Microneedling versus Topical Minoxidil Alone in the Treatment of Androgenetic Alopecia. Journal of cutaneous and aesthetic surgery, 11(4), 211–216. https://doi.org/10.4103/JCAS.JCAS_130_17.
- Meyer, B. R., White, H. M., McCormack, J. D., & Niemeyer, E. D. (2023). Catechin Composition, Phenolic Content, and Antioxidant Properties of Commercially-Available Bagged, Gunpowder, and Matcha Green Teas. Plant foods for human nutrition (Dordrecht, Netherlands), 78(4), 662–669. https://doi.org/10.1007/s11130-023-01121-2.
- Hou, I. C., Oi, Y., Fujita, H., Yano, Y., Fukami, H., & Yoshikawa, M. (2013). A hair growth-promoting effect of Chinese black tea extract in mice. Bioscience, biotechnology, and biochemistry, 77(7), 1606–1607. https://doi.org/10.1271/bbb.130298.
- Yusuf, N. A., Hardianti, B., & Rahma, R. (2021). Hair tonic formulation of black tea extract (Camellia sinensis) as hair growth. Journal of Fundamental and Applied Pharmaceutical Science, 2(1), 43–52. https://doi.org/10.18196/jfaps.v2i1.12451.
