Ingredient review
Chryseobacterium Ferment Filtrate
INCI: CHRYSEOBACTERIUM SP. MK-8 FERMENT FILTRATE
A gentle, biotech-derived ferment that may help calm and condition skin, but research is still early.
In plain English
This ingredient is made by fermenting a harmless bacterium called Chryseobacterium sp. MK-8. The fermentation process creates a liquid rich in peptides, amino acids, and other bioactive molecules that can be used in skincare. It's thought to help soothe irritation and support the skin's natural barrier, but it's not yet as well-studied as more common ferments like galactomyces or bifida.
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
Chryseobacterium Ferment Filtrate 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 Chryseobacterium Ferment Filtrate.
- 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 filtrate obtained from the fermentation of the bacterium Chryseobacterium sp. MK-8, containing peptides, amino acids, and other metabolites.
How it works
When applied to skin, the peptides and amino acids in the filtrate may help calm inflammatory signals and support the skin's moisture barrier. It acts as a skin conditioner, leaving skin feeling softer and more comfortable.
Pros
Gentle on sensitive skin
This ferment filtrate has a low irritation risk, making it suitable for those with easily irritated or reactive skin.
Supports skin barrier
The peptides and amino acids may help strengthen the skin's natural moisture barrier, leading to better hydration and resilience.
Cons and cautions
Limited research
Most evidence comes from lab studies or the manufacturer's own data, not large independent human trials, so its effectiveness is not fully proven.
Less common ingredient
It's not as widely used or studied as other ferments, so product options may be limited and long-term safety data is sparse.
Best for
- People with sensitive or reactive skin looking for a gentle soothing ingredient
- Those interested in biotech-derived, sustainable skincare ingredients
Use caution if
- Anyone with a known allergy to fermented ingredients (rare)
Usage tips
Safety summary
Based on available data, Chryseobacterium Ferment Filtrate has a low irritation and comedogenic risk. It is considered safe for topical use in cosmetics, but long-term studies are lacking.
Research notes
Research on this specific strain is limited to a few in vitro and manufacturer studies suggesting anti-inflammatory and barrier-supporting effects. More independent human trials are needed to confirm benefits.
Common label clues
- Typical concentration
- Typically 1-5% in leave-on products
- Regulatory status
- Generally recognized as safe for cosmetic use in the US and EU when used as intended, though not specifically approved as a drug ingredient.
- Common uses
- Serums, Moisturizers, Soothing creams
- Environmental note
- Fermentation-based ingredients often have a lower environmental footprint than plant extracts, as they require less land and water.
Good to know
- This ingredient is produced via fermentation, which is a sustainable process that uses less water and energy than traditional extraction.
- It is not a live bacteria; the fermentation process kills the bacteria, leaving only the beneficial metabolites.
Common questions
What is Chryseobacterium Ferment Filtrate in beauty products?
This ingredient is made by fermenting a harmless bacterium called Chryseobacterium sp. MK-8. The fermentation process creates a liquid rich in peptides, amino acids, and other bioactive molecules that can be used in skincare. It's thought to help soothe irritation and support the skin's natural barrier, but it's not yet as well-studied as more common ferments like galactomyces or bifida.
What does Chryseobacterium Ferment Filtrate do in a beauty product?
When applied to skin, the peptides and amino acids in the filtrate may help calm inflammatory signals and support the skin's moisture barrier. It acts as a skin conditioner, leaving skin feeling softer and more comfortable.
Is Chryseobacterium Ferment Filtrate safe for most people?
Based on available data, Chryseobacterium Ferment Filtrate has a low irritation and comedogenic risk. It is considered safe for topical use in cosmetics, but long-term studies are lacking.
Who should be careful with Chryseobacterium Ferment Filtrate?
Anyone with a known allergy to fermented ingredients (rare)
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.