I'm looking for some new face creams for combination skin and found something that didn't make sense to me. Anyone want to ELI5 why prebiotics are a positive thing for skin creams? I've seen several products advertising it. But doesn't prebiotic just mean it's something that bacteria likes to eat? So, in a skin cream that seems like it would promote bacterial growth, which I get why that combined with probiotics can be good for digestion, but can't get why it's a plus and not a minus for skin creams, especially in areas of the skin like the face that tend to gather a lot of bad bacteria.
Anyway, just trying to decide if it's just marketing nonsense, there's an actual benefit, or as it seems with my initial reaction, that it's actually a negative thing that would potentially promote acne/rosacea.
Also, feel free to interject any recommendations on good ingredients/products for aging, combination skin, but not the primary reason for the post.