The microbiome protects the skin from different pathogens and controls your skin's immunity. It also acts as a barrier to support. Also, the microbiome communicates with the skin’s immune system, letting it know which inhabitants are friends or not. When this communication is functioning properly, the skin microbiome traps moisture and keeps irritants and pathogens out. But when it’s not in balance, it can lead to a lot of issues like eczema, psoriasis, rosacea, and acne. That’s why your microbiome is so important, especially for sensitive skin people.