Rhizopus/Borago Officinalis Seed Oil Ferment Filtrate

This ingredient is a fermented filtrate combining Rhizopus (a fungal fermentation medium) with Borago Officinalis Seed Oil, commonly known as borage oil. The fermentation process breaks down the oil into smaller molecular components, potentially enhancing penetration and bioavailability compared to the unfermented oil alone.Borago oil is naturally rich in gamma-linolenic acid (GLA) and other fatty acids. In this fermented form, it functions primarily as a skin conditioning agent—meaning it helps to soften, smooth and maintain the skin's moisture barrier and overall texture.

The fermentation process enzymatically breaks down borage oil into smaller, more bioavailable components. This can improve the ingredient's ability to penetrate the outer layers of skin and interact with the stratum corneum (the skin's outermost layer).Once in the skin, the fatty acids work to replenish and reinforce the lipid matrix—the natural oils that bind skin cells together. This helps maintain hydration and supports the skin's structural integrity, which is particularly relevant for compromised or dehydrated barriers.

This ingredient is typically found in serums, moisturisers and barrier-repair products. Apply to clean skin, either alone or as part of a layered routine. Since it is an oil-based ingredient, use sparingly if you have very oily skin—a little often goes a long way. It pairs well with lightweight hydrating ingredients and can be used morning or evening depending on the product formulation and your skin's preference.

Generally well-tolerated and suitable for most skin types. Those with a known sensitivity to borage or fungal-derived ingredients should patch test first. No major safety concerns are documented at typical cosmetic use levels.