Bacillus … Filtrate

Bacillus/Rosemary Leaf/Soybean Ferment Extract Filtrate is a fermented ingredient created by cultivating Bacillus (a naturally occurring bacterium) in a substrate of rosemary leaf and soybean. The fermentation process breaks down the plant materials, and the resulting liquid filtrate contains bioactive compounds including peptides, amino acids, and polysaccharides produced during microbial metabolism.In skincare formulations, this ingredient functions as a multitasking additive with antimicrobial, humectant, and skin-conditioning properties. Its fermented nature means the plant compounds ha…

The fermentation process generates bioactive compounds — including amino acids, peptides, and organic acids — that penetrate and condition the skin. Rosemary's natural antimicrobial constituents are enhanced through fermentation, potentially making them more bioavailable. The ingredient also functions as a humectant, binding water molecules within the skin's outer layers to improve hydration and plumpness.The small molecular weight compounds resulting from fermentation may also support the skin barrier by providing amino acids that contribute to natural moisturising factor (NMF) production,…

This ingredient is typically incorporated into serums, essences, and moisturisers at concentrations determined by the brand's formulation. As with any fermented ingredient, consistency of use will yield better results than sporadic application. It pairs well with other hydrating and barrier-supporting ingredients, and is generally compatible with most skincare routines. If using it alongside active ingredients like acids or retinoids, introduce it gradually to assess tolerance.

Generally well-tolerated by most skin types. Those with sensitivity to fermented ingredients or rosemary should patch test first. No significant safety concerns are documented at typical cosmetic use levels.