Saccharomyces/Lithospermum Erythrorhizon Root Oil Ferment Filtrate

This ingredient is a fermented filtrate derived from lithospermum erythrorhizon root oil, processed using saccharomyces (a type of yeast). Fermentation breaks down plant compounds into smaller, potentially more bioavailable molecules, whilst the filtration process removes solid matter to create a lightweight liquid.In skincare formulations, it functions as a skin conditioner—a category of ingredients intended to soften, smooth, and support the skin's moisture barrier. The oil component provides emollient properties, whilst the fermentation process may enhance penetration or alter the ingred…

Fermentation alters the molecular structure of the original plant material, potentially creating compounds that are easier for skin to absorb and utilise. The resulting filtrate delivers conditioning oils whilst the fermentation byproducts may offer additional benefits such as antioxidant activity.As a skin conditioner, the ingredient works primarily through occlusion and emollient action—creating a protective layer on the skin surface that helps reduce transepidermal water loss and leaves skin feeling softer.

This ingredient is typically used as part of a moisturiser, serum, or treatment product. Apply to clean skin, either alone or as part of your regular routine. If using multiple active ingredients, introduce fermented plant extracts gradually to monitor for any sensitivity. The lightweight nature of fermented filtrates means they can often be layered under or over other products without feeling heavy.

Generally well-tolerated in cosmetic concentrations. Those with sensitivity to yeast or fermented products may wish to patch test first. No significant cautions identified in standard cosmetic ingredient databases.