Saccharomyces/Potato Extract Ferment Filtrate

Saccharomyces/Potato Extract Ferment Filtrate is a fermented ingredient derived from potato extract using Saccharomyces (a type of yeast). The fermentation process breaks down the potato's natural compounds into smaller molecular components, which are then filtered to create a liquid extract.In skincare, this ingredient functions primarily as a humectant — a substance that draws water from the air and deeper skin layers into the stratum corneum (the outermost layer), helping to improve skin hydration and moisture retention.

Humectants work by hygroscopic action — they have a chemical affinity for water molecules. When applied to skin, Saccharomyces/Potato Extract Ferment Filtrate attracts and binds water, drawing it into the outer layers of the epidermis. This process temporarily plumps the skin and can reduce the appearance of fine lines and dryness.The fermentation process may also preserve or enhance certain bioactive compounds from the potato that could offer additional conditioning benefits, though the specific mechanisms in this ingredient remain understudied in published research.

This ingredient is best incorporated into serums, essences, or hydrating toners, where it can be absorbed efficiently. Apply to clean, slightly damp skin to maximise its humectant effect — the presence of water enhances the ingredient's ability to draw moisture into the skin. It pairs well with occlusive ingredients (such as oils or ceramides) layered on top, which help lock in the hydration it provides. Use daily as part of your regular moisturising routine.

Saccharomyces/Potato Extract Ferment Filtrate is generally considered safe for topical use and well-tolerated by most skin types. Those with yeast sensitivities should patch-test first, though topical application is unlikely to trigger systemic issues.