Is Kefir Darm useful for Haut?

Kefir, a fermented milk drink rich in probiotics, may theoretically support skin health via the gut-skin axis. Its probiotics and postbiotic metabolites can modulate inflammation and improve skin barrier function. However, direct clinical evidence for a benefit of kefir on skin conditions like acne or eczema is limited. Most data come from in vitro or animal models; human intervention studies are scarce and small. Additionally, microbial strains vary widely among kefir products, complicating comparisons. In individuals with lactose intolerance or histamine sensitivity, kefir might even trigger skin reactions. Overall, kefir as part of a balanced diet likely supports gut health, but a specific skin benefit is not well-established. Evidence: mechanistic.