Prebiotic/Probiotic/Postbiotic

Lactobacillus/Betula Platyphylla Japonica Juice Ferment

INCI: LACTOBACILLUS/BETULA PLATYPHYLLA JAPONICA JUICE FERMENT

Reviewed by Rosie · Last updated 2 Jun 2026

Also known as: Lactobacillus/betula Platyphylla Japonica Juice Ferment

Fermented birch extract with antioxidant properties to help protect skin

Best For Skin Types

All, Dry, Sensitive, Mature

Addresses

Oxidative stress, Environmental damage, Sensitivity

Usage Frequency

Daily

What Is Lactobacillus/Betula Platyphylla Japonica Juice Ferment?

Lactobacillus/Betula Platyphylla Japonica Juice Ferment is a fermented ingredient derived from Japanese white birch (Betula platyphylla japonica) juice. The fermentation process, carried out by Lactobacillus cultures, breaks down compounds in the birch juice and may enhance their bioavailability and stability in skincare formulations.

This ingredient functions primarily as an antioxidant, helping to neutralise free radicals that can accumulate on the skin through environmental exposure and natural metabolic processes. By reducing oxidative stress, it may help maintain skin resilience and support the skin's natural protective mechanisms.

Benefits for Your Skin

How It Works

The antioxidant activity comes from compounds within the birch juice, such as polyphenols and other phytochemicals. The Lactobacillus fermentation process breaks these compounds into smaller, potentially more absorbable forms, whilst also preserving the ingredient and preventing degradation in the finished product.

When applied topically, these antioxidants work by donating electrons to unstable free radicals, stabilising them and preventing them from triggering oxidative chain reactions in the skin. This helps reduce the cumulative stress placed on skin cells and supporting structures.

Clinical Evidence & References

Published clinical studies specifically evaluating this fermented birch extract in skincare applications are limited. The antioxidant potential of birch compounds is recognised in botanical research, and fermentation as a technique is widely used in cosmetics to enhance ingredient stability and efficacy. However, direct evidence for this specific ingredient's performance in human skin studies is not well-established in the public literature.

As with many botanical ferments, benefits are likely modest and complementary to a broader skincare routine rather than standalone solutions. More targeted human studies would help clarify its practical impact on skin condition.

How to Use

This ingredient is typically incorporated into serums, essences, toners and lightweight moisturisers. Apply to clean skin before heavier creams or oils to allow absorption. It works well in layered routines and can be used daily as part of your antioxidant protection strategy, particularly if you live in an urban environment or are concerned about environmental aggressors.

Safety & Precautions

Generally well-tolerated in skincare formulations. Those with sensitivity to fermented ingredients or botanical extracts should patch-test first, though reactions are uncommon.

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