Quick biology lesson for you! Your body is a giant ecosystem of living organisms, on and inside it. These organisms, (bacteria, viruses, and other tiny things you need a microscope to see), form what's known as the microbiome.
Your microbiome lives in your gut, mouth and skin, so things like diet, hygiene and medications can affect it.
The microbiome plays an essential part in keeping you healthy. It’s the skin's protective shield that protects against the environment around you, disease-causing bacteria and fungi. Your gut also has a microbiome, and there’s a deep relationship between the two – i.e. if you eat well and your gut’s happy, your skin is more likely to be too!