It would seem that where is the connection between yogurt, sauerkraut and acne on the face? But it is, and it is quite direct. We are talking about probiotics, beneficial bacteria that not only help digestion, but can also affect the condition of our skin, including acne.For a long time, acne was considered exclusively a skin problem associated with hyperactivity of the sebaceous glands and the bacterium Propionibacterium acnes (now called Cutibacterium acnes). But more and more studies are pointing to a link between gut health, the immune system, and skin health. A violation of the balance of microflora in the intestine (dysbiosis) can provoke systemic inflammation in the body, which, in turn, worsens acne.Gut–Skin: how does it work?The gut-brain-skin axis is not a fiction. The state of the intestinal microbiome affects the immune system, the level of inflammation, and even the production of certain hormones and neurotransmitters. When "bad" bacteria predominate in the gut, they can release toxins that enter the bloodstream and cause inflammatory reactions throughout the body, including the skin.Probiotics are "good" bacteria (mainly lacto- and bifidobacteria) that help restore a healthy balance of microflora in the intestine. They compete with pathogenic bacteria for space and food, strengthen the intestinal barrier, reduce the permeability of the intestinal walls to toxins, and modulate the immune system, reducing overall inflammation. All this can have a positive effect on the condition of the skin with acne.Probiotics inside and out: two ways to clean skin There are two main ways to use probiotics to combat acne: take them orally (as supplements or with food) and apply them externally (as part of cosmetics).Ingestion of probiotics is aimed at improving intestinal health and reducing systemic inflammation. Studies show that certain strains of lacto- and bifidobacteria can reduce the number and severity of inflammatory elements in acne. It is important to choose high-quality supplements with studied strains and a sufficient concentration of live bacteria. It is also useful to enrich the diet with foods rich in probiotics.:- Natural yogurt (without sugar)- Kefir- Sauerkraut (unpasteurized)- Kimchi- Miso soup- Kombucha (kombucha)These products contain live cultures of beneficial bacteria that promote intestinal health.The external use of probiotics is a relatively new trend. The idea is that the skin also has its own microbiome, and its balance is important for health. Acne is often associated with an imbalance of the skin microbiome, in particular, an excess of C. acnes. Cosmetics with probiotics (or their lysates, fragments of bacteria) are designed to restore this balance, suppress the growth of "bad" bacteria and strengthen the protective barrier of the skin. Such remedies can reduce inflammation and redness directly on the skin.What does the research say and what to expect?Scientific evidence on the effects of probiotics on acne is still accumulating, but there are already encouraging results. Some studies have shown a statistically significant improvement in skin condition in people with acne who took certain strains of probiotics orally or used cosmetics with them.However, it is important to understand that probiotics are not a panacea. They can be an effective addition to the main acne therapy (retinoids, antibiotics, proper care), but they are unlikely to replace it completely, especially in severe forms. The effect of probiotics does not develop immediately, usually it takes several weeks or even months of regular intake or use. In addition, the reaction may be individual – what helped one person may not work for another.Not just bacteria: a comprehensive approach to acne is always a complex story. Probiotics alone cannot solve the problem. It is important to review nutrition in general (reduce the consumption of sugar, dairy products, processed foods), adjust sleep patterns, manage stress, and choose adequate skin care.Probiotics can be a valuable element of this comprehensive strategy, helping to address one of the possible causes of acne – the imbalance of microflora and associated inflammation. It is another tool in the arsenal to achieve clean and healthy skin. But, as with any treatment method, it is better to consult with a doctor or dermatologist before taking supplements or using new cosmetics. сайт флагман