How Green Tea Works, Results, Usage, and Side Effects

Hair loss is a common concern that affects a diverse range of individuals, leading many to explore various treatments, from pharmaceutical solutions to surgical options. In recent years, natural remedies have gained traction, and green tea has emerged as a notable contender in this realm. Rich in antioxidants and catechins, green tea is believed to stimulate hair growth and improve scalp health. This article will delve into how incorporating green tea into your hair care routine can potentially counteract hair loss, examining both the scientific rationale behind its use and the practical ways to apply it for optimal benefits.

Green tea being poured into a cup for natural treatments of hair loss at hairloss-recovery

What Is Green Tea?

Green tea, renowned for its health benefits, is increasingly being recognized as a potential natural treatment for hair loss. This tea, derived from the leaves of the Camellia sinensis plant, is rich in antioxidants, particularly catechins like epigallocatechin gallate (EGCG). These compounds are believed to stimulate hair follicles and promote hair regrowth. They also have anti-inflammatory properties that can improve scalp health, potentially reducing conditions that lead to hair loss. Additionally, the polyphenols in green tea may inhibit the production of Dihydrotestosterone (DHT), a hormone linked to hair loss, particularly in cases of androgenetic alopecia. By incorporating green tea into hair care routines, either through topical application or regular consumption, individuals may experience a reduction in hair loss and an improvement in hair health.

How Green Tea Treats Hair Loss

Green tea offers several mechanisms that can potentially aid in treating hair loss:

  • Antioxidants: It is rich in antioxidants, particularly epigallocatechin gallate (EGCG). These antioxidants help in protecting hair cells from oxidative stress, which is a known contributor to hair loss. By reducing oxidative damage to the scalp and hair follicles, it can improve hair health and potentially reduce hair shedding.
  • DHT Inhibition: Dihydrotestosterone (DHT) is an androgen that plays a significant role in androgenetic alopecia, a common form of hair loss. The catechins in green tea, especially EGCG, are believed to inhibit the activity of 5-alpha-reductase, an enzyme that converts testosterone to DHT. Lower levels of DHT may help in reducing hair loss and promoting hair regrowth.
  • Stimulating Hair Follicles: Some studies suggest that the compounds in it can stimulate hair follicles, encouraging hair growth. This is likely due to improved blood flow and nutrient delivery to the scalp.
  • Anti-inflammatory Properties: It has anti-inflammatory properties, which can benefit scalp health. A healthy scalp is crucial for maintaining healthy hair growth, and reducing inflammation can help in managing conditions like scalp psoriasis or dermatitis that can lead to hair loss.
  • Antimicrobial Effects: It’s antimicrobial properties can help in controlling scalp infections, another factor that can contribute to hair loss.
  • Hormonal Balance: By influencing hormone activity, particularly the reduction of DHT, it may help in restoring a balance that is conducive to hair growth and retention.

Empirical Evidence

While empirical evidence for the effectiveness of green tea in treating hair loss is still developing, several studies have provided insights into its potential benefits:

  • Antioxidant Properties: Green tea’s rich content of antioxidants, particularly epigallocatechin gallate (EGCG), has been the subject of various studies. Research published in the Journal of the National Medical Association has suggested that these antioxidants can protect hair follicles from oxidative stress, potentially reducing hair loss.
  • DHT Inhibition: A study in the journal Phytomedicine highlighted that green tea catechins, like EGCG, could inhibit 5-alpha-reductase, an enzyme responsible for converting testosterone into dihydrotestosterone (DHT). High levels of DHT are associated with androgenetic alopecia, a common type of hair loss.
  • Stimulation of Hair Follicles: Preliminary research, including a study in the journal Phytomedicine, suggests that green tea compounds can stimulate hair follicles, which might promote hair growth. This stimulation is potentially due to increased blood circulation to the scalp.
  • Anti-inflammatory and Antimicrobial Effects: The anti-inflammatory and antimicrobial effects of green tea, as outlined in studies such as those published in the Archives of Dermatological Research, contribute to a healthy scalp environment, which is crucial for hair growth.


User-reported results of using green tea to treat hair loss vary, reflecting a wide range of experiences shared through personal anecdotes, online forums, and product reviews. Some of the common observations made by users include:

  • Reduced Hair Loss: Many users report a noticeable decrease in hair shedding after incorporating it into their hair care routine. This is often attributed to the tea’s DHT-blocking properties, which are thought to slow down hair loss, particularly in cases of androgenetic alopecia.
  • Improved Scalp Health: Users frequently mention an improvement in overall scalp health. It’s anti-inflammatory and antimicrobial properties are believed to contribute to a healthier scalp environment, reducing issues like dandruff and scalp irritation that can contribute to hair loss.
  • Increased Hair Growth: Some individuals claim to have experienced new hair growth or a faster growth rate. While such results are not universally reported, this change is often attribute to improved circulation and nourishment of hair follicles.
  • Enhanced Hair Texture: It is often noted for its potential to improve the texture and appearance of hair, making it softer and more lustrous. Users attribute this to the tea’s rich nutrient and antioxidant profile.
  • Mixed Outcomes: The effectiveness of it for hair loss seems to vary significantly among users. While some report positive effects, others do not notice any significant change in their hair loss condition.
  • Ease of Incorporation into Routine: Many users appreciate the ease with which it can be incorporated into their daily routines, either as a drink or as a topical application like a rinse or in hair care products.
  • Long-term Use for Results: Users often emphasize the need for consistent and long-term use to see noticeable results. It is generally seen as a gradual, long-term treatment rather than a quick fix.
Before and after showing the results of using green tea to treat hair loss

Comparison showing the results of using onion juice for treating hair loss.

How to Use Green Tea

Using green tea for hair loss can be done in various ways, both through topical application and oral consumption. Here’s a guide on how to incorporate green tea into your hair care routine:

  • Drinking Green Tea:
    • Regular consumption of green tea can contribute to overall hair health. Drinking 2-3 cups a day can provide the body with antioxidants and nutrients that may benefit hair growth.
  • Green Tea Rinse:
    • Firstly, brew 2-3 green tea bags in about half a liter of boiling water. Let the tea steep until it cools down to room temperature.
    • After shampooing your hair, use the cooled green tea as a final rinse. Pour it over your scalp and hair, gently massaging it into your scalp.
    • Lastly, leave it on for about 10 minutes, then rinse with cool water. Alternatively, you can choose to leave it in your hair without rinsing.
  • Green Tea Hair Mask:
    • Mix green tea with a carrier oil (like coconut or olive oil) and add a few drops of essential oil (such as rosemary or peppermint) for additional benefits.
    • Apply the mixture to your scalp and hair, leave it on for about 20-30 minutes, then wash it off with a mild shampoo.
  • Topical Green Tea Products:
    • Look for hair care products like shampoos, conditioners, and serums that contain green tea extract. These can be used regularly as part of your hair care regimen.
  • Consistency Is Key:
    • Whether you’re drinking green tea or applying it topically, consistency is crucial. Regular and long-term use is more likely to yield noticeable results.
  • Patch Test:
    • Before using green tea topically, especially if mixed with other ingredients, do a patch test to ensure you don’t have an allergic reaction.

Safety and Side Effects

While green tea is generally safe and well-tolerated, there are some potential side effects and considerations to keep in mind when using it to treat hair loss, especially if it is used frequently or in large quantities:

  • Caffeine Sensitivity: It contains caffeine, which can cause issues for individuals sensitive to it. Symptoms may include jitteriness, insomnia, a rapid heartbeat, or anxiety. It’s important to monitor caffeine intake if you’re consuming a lot of it.
  • Topical Irritation: Some individuals might experience irritation when applying it topically, particularly if they have sensitive skin. Symptoms can include redness, itching, or dryness.
  • Iron Absorption: It can interfere with the absorption of iron from foods. This is particularly important for individuals who have iron deficiency or anemia. Drinking it well before or after meals and considering iron supplementation can mitigate this effect.
  • Effect on Blood Sugar and Pressure: It can influence blood sugar and blood pressure levels. While it can be beneficial in moderating these levels, individuals with diabetes or hypertension should monitor their condition closely when increasing their intake.
  • Interactions with Medications: It can interact with certain medications, including blood thinners and some heart medications. Consult with a healthcare provider if you are on any medication before significantly increasing your consumption.
  • Pregnancy and Breastfeeding: Excessive consumption of it during pregnancy or breastfeeding should be avoided due to caffeine content and potential impacts on nutrient absorption.
  • Allergic Reactions: As with any natural remedy, there is a possibility of allergic reactions. Conducting a patch test before applying it topically is advisable.
  • Dehydration: Due to its diuretic properties, especially when consumed in large amounts, it can lead to dehydration. It’s important to balance it with adequate water intake.


In conclusion, green tea, with its rich array of antioxidants and potential DHT-blocking properties, offers a promising natural remedy for those grappling with hair loss. While its effectiveness can vary from person to person, the ease of incorporating it into daily routines, either through consumption or topical application, makes it an accessible option for many. However, it’s important to approach its use with realistic expectations and an understanding of potential side effects, such as caffeine sensitivity and iron absorption issues. Green tea should ideally be part of a comprehensive approach to hair care and overall health. As research continues to evolve, green tea remains a valuable and widely embraced element in the quest for natural hair loss solutions.


  • Journal of the National Medical Association, 2005.
  • Phytomedicine, 2007.
  • Archives of Dermatological Research, 2006.

Note: This piece serves as an informative overview. Individual responses may vary, and consultation with a qualified medical professional is indispensable before initiating any therapeutic regimen.

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