The 2026 Global Delphi Consensus on Acne and the Microbiome says microbiome-targeted treatments should be part of acne care for affected teens and adults with acne-prone skin. It links acne severity to balance in skin and gut microbes, not to dirt or poor cleansing.
A Delphi consensus is a structured vote by international experts until they reach clear agreement. The microbiome means the community of bacteria and other microbes that normally live on skin and in the gut. According to the MDPI Pharmaceuticals Delphi consensus, experts reached full agreement on adopting microbiome-targeted care, as reported in the consensus paper.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What did the experts agree on?
- Why does bacterial balance matter more than amount?
- Where do probiotics and postbiotics fit?
- How can you protect skin flora each day?
What did the experts agree on?
The panel agreed unanimously, at 100%, that microbiome-targeted treatments belong in acne management for affected adolescents and adults. About 89% agreed that skin and gut microbes influence acne severity and that the gut-skin axis affects acne development.
About 89% also agreed that prebiotics, probiotics and postbiotics belong in acne therapy. The panel viewed them as add-on support, often as adjuncts rather than stand-alone cures. Probiotics are live helpful microbes, prebiotics feed them, and postbiotics are stable useful products they make.
Why does bacterial balance matter more than amount?
Acne reflects dysbiosis, which means loss of microbial balance and diversity. The issue is not simply more bacteria on oily skin. As described in the Springer Dermatology and Therapy review, harmful Cutibacterium acnes types can dominate while protective types decline, as detailed in the dysbiosis review. Inflammatory phylotypes such as IA-1 and Type 1 drive lesions.
Protective Type 2 strains help keep skin calmer. Normal Cutibacterium acnes and Staphylococcus epidermidis support immune balance, acidity, sebum control and barrier strength. When that support fails, inflammation rises. Breakouts last longer and leave marks, dark spots and scars more easily.
Where do probiotics and postbiotics fit?
Probiotics may help restore balance and calm acne-related inflammation. They work best beside proven acne care, not instead of it. A routine plus a microbial adjunct can address both lesions and irritation.
The authors state that prevention claims remain hypothesis-generating and need more validation. Links between dysbiosis, lasting immune response and long-term skin remodeling remain incompletely understood. Treat microbial products as promising support with limits, not as guaranteed prevention.
How can you protect skin flora each day?
For acne-prone skin, preserve flora rather than sterilize it. Harsh scrubs, strong antibacterial washes and frequent alcohol toners strip helpful microbes. According to the international expert consensus in the Journal of the European Academy of Dermatology and Venereology, gentle barrier-supporting care helps maintain microbial balance, as outlined in the expert skin-care consensus.
- Wash once or twice daily with a gentle cleanser near pH 4.7-5.75
- Moisturize with a barrier-supporting product that suits acne-prone skin
- Use sunscreen daily to reduce inflammation and dark marks
- Avoid picking, over-exfoliating and switching products every few days
- Ask a dermatologist if a multistrain synbiotic or stable topical postbiotic fits your plan
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