Prebiotic/Probiotic/Postbiotic

Lactococcus/Hyaluronic Acid Ferment Filtrate

Reviewed by Daisy · Last updated 2 Jun 2026

Fermented hyaluronic acid derivative that supports skin hydration and barrier function

Best For Skin Types

All, Dry, Combination, Mature

Addresses

Dryness, Hydration, Barrier repair

Usage Frequency

Daily

What Is Lactococcus/Hyaluronic Acid Ferment Filtrate?

Lactococcus/Hyaluronic Acid Ferment Filtrate is a bioactive ingredient created through fermentation of hyaluronic acid using Lactococcus bacteria. This process breaks down and modifies the hyaluronic acid molecule, potentially creating smaller molecular fragments and byproducts that may behave differently in skincare formulations than unmodified hyaluronic acid.

The fermentation process is thought to enhance bioavailability and create compounds that support skin's natural moisture-retention mechanisms. It functions as a humectant—drawing water into the skin—whilst potentially offering additional benefits from fermentation metabolites.

How It Works

This ingredient works primarily as a humectant, meaning it attracts and binds water molecules to the skin's surface and upper layers, increasing hydration levels. The fermentation process may create smaller molecular weight fragments that penetrate more effectively than large-chain hyaluronic acid molecules.

Additionally, fermentation byproducts may include beneficial compounds such as amino acids and organic acids that support skin conditioning and may have mild prebiotic or skin-conditioning effects, though the extent of these secondary benefits varies depending on formulation and concentration.

Clinical Evidence & References

Whilst hyaluronic acid itself has substantial research supporting its hydrating properties, specific clinical data on fermented hyaluronic acid derivatives remains limited. Most evidence is derived from manufacturer studies or small-scale trials rather than large, independent clinical investigations.

General principles suggest that fermented ingredients may improve skin penetration and bioavailability compared to their non-fermented forms, but individual results will depend on molecular weight, formulation pH, and skin condition. Further independent research would help clarify the specific benefits of this fermented variant.

How to Use

This ingredient is typically incorporated into serums, essences, toners, and moisturisers. Since it functions as a humectant, it works best when applied to damp skin, allowing it to draw moisture into the skin. Layer it before heavier creams to maximise hydration without creating a heavy feel. It can be used alongside other hydrating or barrier-support ingredients without conflict.

Safety & Precautions

Lactococcus/Hyaluronic Acid Ferment Filtrate is generally well-tolerated across skin types. Those with sensitivity to fermented ingredients should patch test first, as fermentation byproducts can occasionally trigger reactivity in compromised barriers.

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