The Skin Microbiome
The Skin Microbiome — the community of bacteria, fungi, viruses, and other microorganisms that live on the surface of the skin and within its follicles and glands. This ecosystem interacts with the skin barrier and immune system, and a balanced, diverse population is associated with healthier, more resilient skin.
Key points
- The skin hosts distinct microbial communities that vary by body site, depending on whether an area is oily, moist, or dry.
- Commensal microbes help crowd out potential pathogens and can support the skin's natural defenses.
- Microbiome balance is influenced by pH, skin lipids, moisture, hygiene habits, and product use.
- Disruption of the microbiome (dysbiosis) has been linked in research to conditions such as acne, eczema, and rosacea.
- Harsh cleansing and high-pH products can reduce microbial diversity and stress the skin barrier.
Frequently asked
Can skincare products affect the skin microbiome?
Yes; cleansers, preservatives, and pH can shift the microbial balance, which is why gentle, low-pH formulas are often favored to help preserve microbial diversity.
Is a diverse skin microbiome a good thing?
Research generally associates greater microbial diversity with healthier skin, though the ideal composition varies by individual and body site.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
