Benefits Of Lactobacillus Reuteri for Hair Growth

Benefits Of Lactobacillus Reuteri for Hair Growth & Hair Loss

Lactobacillus reuteri is a type of bacteria that lives in our intestines.

Although small, it plays an important role in balancing intestinal microflora and supporting the immune system. In particular, many recent studies have shown that Lactobacillus reuteri can affect our hair health.

Hair loss is not a problem for everyone; the amount of hair falling out is even greater than that of growing.

Will taking probiotic supplements like Lactobacillus reuteri improve hair condition? Let's find out through the following article - Lactobacillus reuteri for hair growth.


Key Takeaways

  • Lactobacillus reuteri may promote hair growth, prevent hair thinning, and increase hair quantity during the anagen (growth) phase of the hair cycle.
  • Lactobacillus reuteri helps maintain scalp health by balancing natural oils, enhancing the skin barrier, reducing dandruff, and supporting collagen production.
  • Using Lactobacillus reuteri supplements can improve overall hair health by optimizing nutrient absorption, reducing stress, and maintaining hormone balance.

What is Lactobacillus reuteri?

Lactobacillus reuteri

Lactobacillus reuteri (L. reuteri) is a probiotic bacteria that has been studied for its ability to live in many animal species.

In humans, L. reuteri is found in many different areas of the body, including the bloodstream, urinary tract, skin, and breast milk. The diversity of L. reuteri varies among different individuals.

L. reuteri is a form of probiotic that exists in many mammals. The name Lactobacillus reuteri is named after German microbiologist Gerhard Reuter, who spent a lot of time studying the human intestinal microbiome.

L. reuteri is a probiotic that provides many different health benefits, especially affecting the health of hair.

Does Lactobacillus Reuteri Protect Against Hair Loss?

The evidence on whether Lactobacillus Reuteri can prevent hair loss is minimal.

However, there is some evidence that Lactobacillus Reuteri's multiple mechanisms can provide certain benefits to hair, such as preventing hair thinning, promoting faster hair growth, encouraging hair follicle growth, and even increasing hair quantity during the anagen (growth) phase of the hair cycle.

Reuteri supplementation in humans has been shown to increase longevity, reduce inflammation, improve vitamin absorption, balance hormones, preserve hair health, and even reduce stress and anxiety.

Benefits of Lactobacillus Reuteri for Hair Growth

Lactobacillus Reuteri may Improve Scalp

Lactobacillus Reuteri may Improve Scalp

Lactobacillus reuteri may help improve scalp health in a number of ways:

Bacteria can affect the balance between natural oils and moisture on the scalp.

Lactobacillus reuteri can help balance the amount of oil on the scalp, prevent oil imbalance or dry skin, keeping the scalp soft and not dry.

Probiotics can enhance the skin barrier, especially the scalp.

When this barrier is established, the scalp can withstand detrimental impacts from the outside world, such as pollution, UV rays, and pathogenic microorganisms, allowing the scalp to remain healthy and less prone to damage.

In addition, Lactobacillus reuteri can help reduce dandruff on the scalp by balancing bacteria on the scalp, preventing the overgrowth of bacteria that cause dandruff.

A study published in the journal Clinical, Cosmetic, and Investigational Dermatology showed that using probiotics, including Lactobacillus reuteri, can help improve scalp conditions and reduce dandruff and skin irritation. [1]

Besides, some studies demonstrate that Lactobacillus reuteri can support collagen production in the body.

Collagen is an important protein for the elasticity and elasticity of the skin, including the scalp, keeping the scalp healthy and vibrant.

Lactobacillus Reuteri May Thicker, Shinier Hair

Research on a strain of L. reuteri (particularly ATCC PTA 6475) injected into the digestive tract for testing revealed that L. reuteri is actually advantageous for hair development, following 30 days of use, Men's hair regeneration rate was 1200%, while women's hair growth was 100%. Additionally, the scalp structure thickens dramatically.

Lactobacillus Reuteri May Protect Against Hair Loss Through Many Mechanisms

Lactobacillus Reuteri May Protect Against Hair Loss

Hair growth can be divided into four phases: anagen (rapid hair growth phase), catagen (apoptotic regression phase), telogen (relatively inactive phase), and exogen. Any abnormal activity during this period will affect the growth cycle of hair follicle cells and shorten hair growth time.

Lactobacillus Reuteri has a strong impact on the anagen phase, thereby affecting hair growth through many mechanisms:

  • Lactobacillus Reuteri helps exfoliate the skin and regenerate new cells, providing additional natural nutrients such as B vitamins, peptides, proteins, amino acids, carbohydrates, and nucleic acids, helping to regenerate and nourish the skin while increasing moisture for the scalp. When the body is provided with adequate nutrients, hair will be strong and less likely to fall out.
  • Balancing intestinal microorganisms: Lactobacillus reuteri bacteria can help balance intestinal microorganisms, improve the immune system, and reduce inflammation. When the body functions well from the inside, especially the digestive and immune systems, this can reduce the risk of health problems that can cause hair loss.
  • Enhance collagen formation: The Lactobacillus reuteri bacteria can influence collagen production in the body. Collagen is a protein that improves hair structure and reduces hair loss.
  • Bacteria can assist in improving the scalp's protective barrier, thereby protecting hair from damaging impacts from the external environment, such as pollution and UV rays.

How Does Lactobacillus Reuteri Benefit for Hair Growth

Lactobacillus reuteri is a type of bacteria that may aid hair health in a variety of ways, including regulating the gut microbiota, boosting immunity, and improving nutrient absorption, all of which contribute to optimal growth hormone production and promote hair growth.

Exploring The Relation of Our Gut and Hair Health

Our skin and mucosal surfaces contain millions of bacteria that play a variety of metabolic tasks and contribute to the body's immunity.

These bacteria contribute significantly to digestive tract homeostasis. When the usual balance of gut flora is altered, symptoms of allergies, autoimmune, and hair metabolism may arise.

Intestinal bacteria are directly associated with the secretion of many physiological hormones and hormones, so an imbalance in intestinal bacteria causes a rise in inflammatory factors and hormonal imbalance, as well as damage to hair follicle cells and increases hair loss symptoms.

Therefore, certain probiotic-rich supplements can enhance immune and metabolic processes, helping to restore homeostasis.

Research shows that dietary supplementation with lactobacillus probiotics is beneficial for hair. L. plantarum is commonly used for its antibacterial activity, Angiotensin-converting enzyme (ACE) inhibition, lipid metabolism, and hair growth.

Studies have shown that the use of L. plantarum can increase hair growth and vascular endothelial growth (VEGF), keratinocyte growth (KGF), and transforming-beta1 growth (TGF). -β 1) is involved in hair growth [2].

L.Reuteri, Testosterone, And Hair Loss

Men's hair loss is primarily caused by hormonal abnormalities involving testosterone and dihydrotestosterone (DHT). In a normal state of operation, these two hormones are in balance. However, as the amount of testosterone in the body drops, the level of dihydrotestosterone (DHT) increases, which is damaging to hair development.

According to research, L. reuteri can influence testosterone levels, which have been associated with hair loss in both men and women.

L. reuteri bacteria, in particular, can assist in enhancing testosterone production in the body by inhibiting the aromatase enzyme (the enzyme that turns testosterone into estrogen), allowing testosterone levels to remain higher and preventing hair loss [3]

Additionally, L. reuteri can improve digestion and nutrient absorption, helping the body function better and produce hormones like testosterone more effectively.

However, you should note that the effects of L. reuteri on testosterone levels are not always uniform and depend on many factors, such as weight, lifestyle, general health status, and microbe levels high or low bacteria present in the body.

Why Should You Use Lactobacillus Reuteri Supplements for Hair Health?

Using Lactobacillus (one of the widely used probiotic bacteria) helps balance the microflora while restoring the function of the digestive system and is extremely beneficial for hair health. Probiotics L. Reuteri product produced using film coating technology shows that probiotics are protected with a survival rate of up to 90%, increasing efficiency by 5 times compared to conventional production methods.

Taking Lactobacillus reuteri has extreme health benefits, such as strengthening the immune system and reducing inflammation and scalp irritation, which can help improve the health of the scalp and hair.


In conclusion, Lactobacillus reuteri bacteria provides numerous health benefits, including improved hair and overall wellness. Lactobacillus Reuteri bacteria helps hair health by regulating intestinal microbiota, strengthening the immune system, reducing inflammation and scalp irritation, enhancing nutrient absorption, and reducing stress, as well as hormone balance.


[1] Butler, Éile, et al. "Lactobacillus Reuteri DSM 17938 as a Novel Topical Cosmetic Ingredient: A Proof of Concept Clinical Study in Adults with Atopic Dermatitis." Microorganisms, vol. 8, no. 7, 11 July 2020, p. 1026, Accessed 4 Oct. 2020.
[2] Woo YM, Kim OJ, Jo ES, Jo MY, Ahn MY, Lee YH, et al. The effect of Lactobacillus plantarum hydrolysates promoting VEGF production on vascular growth and hair growth of C57BL/6 mice. Journal of Analytical Science and Technology. 2019;10(1):1-9.
[3] Poutahidis, Theofilos, et al. "Probiotic Microbes Sustain Youthful Serum Testosterone Levels and Testicular Size in Aging Mice." PLoS ONE, vol. 9, no. 1, 2 Jan. 2014, p. e84877,
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Ralph S. Albert, with over 10 years of expertise in nutrition and research, now heads the Research division at Vinatura Supplements. His dedication and extensive knowledge ensure top-quality articles on nutrition and health, collaborating with a skilled team. He has successfully completed The VINATURA Expertise Research Training Program, underscoring his commitment to Vinatura's mission. Ralph has also published numerous articles and conducted valuable research in the field, making him a trusted resource for individuals on their wellness journey.

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