What is the skin microbiome?
Human skin is home to billions of microorganisms—bacteria, fungi, viruses, and mites—that form a complex ecosystem called the skin microbiome. Far from being harmful, the vast majority of these microorganisms play an essential role in protecting the skin, regulating its pH, and maintaining its functional integrity.
Key inhabitants of the skin microbiome include Staphylococcus epidermidis, which produces natural antimicrobial substances, and Cutibacterium acnes, which is harmless in balance but whose excessive proliferation is associated with inflammatory acne.
Skin dysbiosis: when the balance is broken
Skin dysbiosis occurs when this microbial balance is disrupted. This can happen due to excessive use of antiseptic products or topical antibiotics, intense UV exposure, chronic stress or hormonal fluctuations, or even a pro-inflammatory diet.
During dysbiosis, Cutibacterium acnes proliferates disproportionately, protective bacteria decrease, and the skin becomes more susceptible to inflammation and imperfections. This imbalance is now recognized as one of the central factors in the development of acne, particularly chronic adult acne.
The probiotic approach: rebalance rather than eliminate
Conventional cosmetics have long sought to "kill" the bacteria responsible for acne. But this approach has its limitations: it indiscriminately destroys good and bad bacteria, promotes resistance, and weakens the skin barrier.
The probiotic approach, on the contrary, seeks to restore microbial diversity so that the skin can regain its own defense mechanisms. Studies have shown that topical application of certain probiotic strains reduces the population of Cutibacterium acnes and strengthens the production of natural antimicrobial peptides by the skin.
Microbiome and diet: the gut-skin axis
The skin microbiome is also influenced by the gut microbiome via the gut-skin axis. A diet rich in fiber, fermented foods, and low in refined sugars promotes a diverse and balanced gut flora, which positively reflects on the skin. Conversely, a dysbiotic gut can generate systemic inflammation that manifests particularly through acne breakouts.
Active ingredients that support the microbiome in Zactigis formulas
At Zactigis, microbiome health is at the heart of our approach. Our formulas integrate probiotic active ingredients selected for their ability to rebalance the skin flora without aggression: lactoferrin, fermented white willow extracts, and selected strains for their effectiveness on blemish-prone skin. This gentle but effective approach allows for lasting results while respecting the skin's natural ecosystem.
