Leuconostoc/Salix Alba Bark Extract Ferment Filtrate

Leuconostoc/Salix Alba Bark Extract Ferment Filtrate is a fermented ingredient combining white willow bark extract with Leuconostoc bacteria fermentation. The fermentation process breaks down plant compounds into smaller, potentially more bioavailable molecules whilst the bacteria themselves produce beneficial metabolites.This ingredient functions as both an antimicrobial and a skin/hair conditioner. It's used primarily in formulations targeting scalp health and oily or compromised skin, where its dual action can help manage bacterial colonisation whilst maintaining hydration and barrier fu…

Willow bark is known to contain salicylates and polyphenols with antimicrobial and anti-inflammatory properties. Fermentation with Leuconostoc bacteria enhances bioavailability and generates additional compounds—including organic acids and fermentation metabolites—that can strengthen antimicrobial activity and skin conditioning benefits.When applied topically, these compounds work to inhibit microbial growth (particularly relevant for dandruff and acne-prone conditions) whilst the conditioning elements help protect the skin barrier and prevent moisture loss.

This ingredient is most commonly encountered in scalp treatments, shampoos, and conditioners rather than leave-on skincare. If present in a skincare product, use as directed by the manufacturer. For scalp products, apply to damp scalp and massage gently; allow appropriate contact time as recommended. Combine with other scalp-support habits such as gentle cleansing and regular rinsing for best results.

Generally well-tolerated in cosmetic formulations. Those with known sensitivities to willow bark or fermented ingredients should patch-test first. Not suitable for children under the supervision of a healthcare provider without advice.