Ingredient review
Keihi Ekisu (Fermented Plant Extract)
INCI: Lactobacillus/Wasabia Japonica Root Ferment Extract, Lactobacillus/Punica Granatum Fruit Ferment Extract, Lactobacillus/Saccharum Officinarum (Sugarcane) Ferment Extract, Lactobacillus/Saccharomyces/Xylinum/Black Tea Ferment
A fermented botanical blend that may offer antioxidant and soothing benefits, but research is limited.
In plain English
Keihi Ekisu is a mix of plant extracts that have been fermented (like making yogurt or kombucha). Fermentation can break down plant compounds into smaller pieces that might be easier for skin to absorb. This ingredient is often used in products aimed at calming irritation or protecting against environmental stress, though we don't have strong proof yet that it works better than simpler ingredients.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- biotech
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Keihi Ekisu (Fermented Plant Extract) is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Keihi Ekisu (Fermented Plant Extract).
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A proprietary blend of fermented extracts from wasabi root, pomegranate fruit, sugarcane, and black tea, created through a fermentation process using beneficial bacteria and yeast.
How it works
The fermentation process breaks down larger plant molecules into smaller, potentially more bioavailable compounds. These compounds may act as antioxidants, neutralizing free radicals that can damage skin cells, and may help calm inflammation by interacting with skin's immune response.
Pros
Gentle antioxidant
Fermentation may enhance the antioxidant capacity of the plant extracts, helping protect skin from daily environmental damage without irritation.
Soothing potential
The fermented blend may help calm redness and sensitivity, making it suitable for reactive skin types when used in appropriate formulations.
Cons and cautions
Limited evidence
There are no large-scale human studies specifically on this exact blend, so its benefits are based on general knowledge of fermentation and the individual plant ingredients.
Allergen risk
Because it contains multiple plant sources, there is a small chance of allergic reaction in people sensitive to wasabi, pomegranate, sugarcane, or black tea.
Best for
- People with normal to combination skin looking for antioxidant support
- Those interested in fermented skincare ingredients
Use caution if
- Individuals with known allergies to any of the source plants (wasabi, pomegranate, sugarcane, black tea)
Usage tips
Safety summary
Keihi Ekisu is considered safe for topical use in cosmetics at typical concentrations. The main risk is individual allergy to one of the source plants. No serious adverse effects have been reported in the literature.
Research notes
Research on this specific blend is scarce. Studies on fermented plant extracts in general suggest potential antioxidant and anti-inflammatory benefits, but more rigorous clinical trials are needed to confirm efficacy for this particular ingredient.
Common label clues
- Typical concentration
- 1-5% in leave-on products
- Regulatory status
- Generally recognized as safe for cosmetic use in the US and EU when used at typical concentrations. Not classified as a drug.
- Common uses
- Serums, Moisturizers, Essences
- Environmental note
- The sourcing of wasabi and black tea may have environmental impacts depending on farming practices. Fermentation is a relatively low-energy processing method.
Good to know
- Fermented ingredients are often marketed as 'prebiotic' or 'postbiotic' skincare, but these terms are not strictly regulated.
- The specific fermentation process can vary by manufacturer, affecting the final composition and potency.
Common questions
What is Keihi Ekisu (Fermented Plant Extract) in beauty products?
Keihi Ekisu is a mix of plant extracts that have been fermented (like making yogurt or kombucha). Fermentation can break down plant compounds into smaller pieces that might be easier for skin to absorb. This ingredient is often used in products aimed at calming irritation or protecting against environmental stress, though we don't have strong proof yet that it works better than simpler ingredients.
What does Keihi Ekisu (Fermented Plant Extract) do in a beauty product?
The fermentation process breaks down larger plant molecules into smaller, potentially more bioavailable compounds. These compounds may act as antioxidants, neutralizing free radicals that can damage skin cells, and may help calm inflammation by interacting with skin's immune response.
Is Keihi Ekisu (Fermented Plant Extract) safe for most people?
Keihi Ekisu is considered safe for topical use in cosmetics at typical concentrations. The main risk is individual allergy to one of the source plants. No serious adverse effects have been reported in the literature.
Who should be careful with Keihi Ekisu (Fermented Plant Extract)?
Individuals with known allergies to any of the source plants (wasabi, pomegranate, sugarcane, black tea)
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.