Monascus/Soybean Ferment Extract

Monascus/soybean ferment extract is made by fermenting soybean using Monascus fungi, a process that breaks down the soybean's compounds into smaller, more bioavailable molecules. This fermentation creates a complex mixture rich in antioxidants and bioactive compounds that differ from standard soybean extracts.In skincare formulations, it functions primarily as a humectant—drawing moisture into the skin—whilst also contributing antioxidant activity that may help protect against environmental stressors and support skin health.

The fermentation process creates compounds with strong antioxidant capacity, meaning they can donate electrons to neutralise free radicals—unstable molecules that damage skin cells and accelerate visible ageing. This helps reduce oxidative stress at the cellular level.Additionally, the extract appears to inhibit specific enzymes linked to skin ageing: tyrosinase (involved in pigmentation), hyaluronidase (which breaks down hyaluronic acid) and elastase (which degrades elastin). By slowing these enzyme activities, the ingredient may theoretically support skin firmness, elasticity, and even to…

This ingredient is typically found in serums, essences, and moisturisers. As it functions as a humectant, it works best when applied to damp skin or layered with other hydrating products to seal in moisture. It is generally compatible with most skincare routines and can be used alongside actives, though there is no specific guidance on optimal frequency or combination protocols.

Fermented soybean extract is generally well-tolerated and rarely reported as a sensitising ingredient. Those with soy allergies should exercise caution, though topical application carries lower risk than ingestion.