Probiotics are living microorganisms that, when ingested in sufficient quantities, have positive health effects beyond traditional nutritional effects. Contrary to what is known; probiotics are beneficial not only for the digestive system but also for skin conditions, like eczema, urinary and vaginal health, preventing allergies and colds, oral health.
Probiotics involve various strains of special helpful bacteria that exist naturally on the skin and can be added by the use of probiotic skincare products. Probiotics work with prebiotics, carbohydrates that act as a source of food so the probiotics can do their job of preserving and maintaining the skin optimally.
Prebiotics are a kind of bacteria "food" which helps them grow. They can also be known as fertilizers for good bacteria, allowing them to increase in numbers and be more effective in protecting the skin.
Postbiotics are molecules produced by good bacteria. You could say that these are the resulting "waste" produced by bacteria, but they're usually beneficial to the skin.
This is the case, for example, of lactic acid, a very useful postbiotic, because it's part of the skin's hydrolipidic film, which maintains its natural moisture.
These helpful bacterias are claimed to: