Microbiome
Microbiome — the community of bacteria, fungi, and other microorganisms that naturally live on the skin's surface and interact with its barrier and immune defenses. A balanced skin microbiome is thought to support barrier function and help keep the skin environment stable.
Key points
- The skin hosts a diverse population of microbes that varies by body site and between individuals.
- A balanced microbiome is believed to help support the skin barrier and its natural defenses.
- Skin surface pH, moisture, and lipids all shape which microbes thrive.
- Harsh cleansing, some ingredients, and environmental factors can disrupt the microbial balance.
Frequently asked
What does the skin microbiome do?
It is a community of microorganisms that interacts with the skin barrier and immune system and is thought to help maintain a stable, balanced surface environment.
Can skincare affect the microbiome?
Yes, factors like harsh cleansers, pH, and certain ingredients can shift the microbial balance, which is why gentle routines are often recommended.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.

