Your scalp is home to billions of microorganisms that naturally live on your skin. Together, they're called the scalp microbiome.
When this ecosystem is balanced, your scalp is more likely to feel comfortable and healthy. When it's disrupted, some people may experience irritation, excess oil, or flakes.
Supporting the scalp barrier and microbiome is becoming one of the biggest focuses in modern scalp care.
The takeaway: Not all bacteria are bad and balance matters.