Prebiotic/Probiotic/Postbiotic

Aspergillus … Ferment Filtrate

INCI: ASPERGILLUS/SACCHAROMYCES/GLYCYRRHIZA URALENSIS ROOT EXTRACT FERMENT FILTRATE

Reviewed by Daisy · Last updated 14 Aug 2026

A fermented extract blend designed to condition and support skin barrier function

Best For Skin Types

All, Dry, Sensitive, Combination

Addresses

Dryness, Barrier repair, Sensitivity, Redness

Usage Frequency

Daily

What Is Aspergillus … Ferment Filtrate?

This ingredient is a fermented filtrate combining three components: Aspergillus and Saccharomyces (both beneficial microorganisms commonly used in fermentation) with Glycyrrhiza uralensis root extract (licorice root from Central Asia). The fermentation process breaks down the licorice root's compounds into smaller, potentially more bioavailable molecules.

In skincare, it functions primarily as a skin conditioning agent — a category of ingredients designed to improve skin texture, softness and overall skin feel.

How It Works

Fermentation breaks down complex plant compounds into smaller molecular fragments, which theoretically penetrate skin more readily than whole plant material. The Aspergillus and Saccharomyces microorganisms act as biological catalysts in this process, transforming licorice root's constituents.

Once in the formula, the filtrate deposits conditioning agents on the skin's surface and potentially within the stratum corneum (outer layer), where they bind water and improve skin feel. Licorice-derived compounds may also exert mild soothing effects, though the extent depends on their concentration and skin penetration in the final product.

Clinical Evidence & References

Published clinical studies specifically evaluating this exact fermented complex are limited. However, individual components have supporting evidence: licorice root extracts show promise for calming skin irritation and reducing inflammation in several dermatological contexts, and fermentation is widely recognised as a technique for enhancing botanical bioavailability.

The conditioning benefit is primarily empirical, based on the ingredient's known humectant and emollient properties rather than rigorous clinical trials. If you're considering this ingredient for specific concerns such as sensitivity or barrier repair, it's worth viewing it as a supportive player rather than a primary active.

How to Use

This ingredient is typically found in leave-on products such as serums, essences and moisturisers. Because it is a conditioning agent rather than an active treatment ingredient, it can be used daily as part of your regular routine. Layer it after water-based treatments (toners, essences) and before oils or heavier creams to maximise absorption. There is no need to rotate or cycle its use.

Safety & Precautions

Generally well-tolerated across skin types. Those with licorice sensitivity should patch-test first, though reactions are uncommon in cosmetic formulations at typical use levels.

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