Ingredient review
Fermented Spikemoss Extract
INCI: SACCHAROMYCES/SELAGINELLA LEPIDOPHYLLA FERMENT FILTRATE
A gentle, fermented botanical extract that may help hydrate and support skin barrier function, though human studies are limited.
In plain English
This ingredient is made by fermenting the resurrection plant (Selaginella lepidophylla) with yeast. The fermentation process breaks down the plant material into smaller molecules that are easier for skin to absorb. It's thought to help skin hold onto moisture and stay resilient, similar to how the plant survives extreme dryness. You'll find it in hydrating serums and essences aimed at soothing and plumping the skin.
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
Fermented Spikemoss 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 Fermented Spikemoss 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 fermented filtrate created by culturing Saccharomyces (baker's yeast) with Selaginella lepidophylla, a desert plant known for surviving near-complete dehydration. The resulting liquid contains peptides, amino acids, sugars, and other postbiotic metabolites.
How it works
The fermentation process generates bioactive compounds that may support the skin's natural moisture barrier. The filtrate is thought to provide humectant properties (attracting water to the skin) and help maintain a healthy skin microbiome by delivering prebiotic-like nutrients.
Pros
Gentle hydration
Provides moisture without heavy oils, making it suitable for most skin types including oily and combination skin.
Postbiotic support
The fermentation process creates beneficial metabolites that may help balance the skin's microbiome and strengthen the barrier.
Cons and cautions
Limited research
Most evidence comes from lab studies or the plant's own biology, not large human trials. Benefits may be subtle.
Potential for irritation in sensitive individuals
Though rare, fermented ingredients can cause reactions in people with yeast sensitivities or compromised skin barriers.
Best for
- People with dry or dehydrated skin
- Those looking for gentle, fermented skincare ingredients
Use caution if
- Individuals with known yeast allergies
- Those who prefer non-fermented ingredients due to sensitivity
Usage tips
Safety summary
Considered safe for topical use with low irritation and comedogenic risk. As with any fermented ingredient, patch test if you have a history of yeast sensitivity.
Research notes
Lab studies suggest the resurrection plant produces protective compounds during dehydration, and fermentation may enhance bioavailability. Human studies are scarce, so evidence is emerging rather than strong.
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 formulated within standard concentrations.
- Common uses
- Serums, Moisturizers, Essences, Sheet masks
- Environmental note
- The resurrection plant is sustainably harvested or cultivated; fermentation is a low-energy process that reduces waste.
Good to know
- Selaginella lepidophylla is also known as the resurrection plant because it can survive extreme drought and rehydrate.
- Fermented ingredients often contain natural preservatives, but always check the full formula for stability.
Common questions
What is Fermented Spikemoss Extract in beauty products?
This ingredient is made by fermenting the resurrection plant (Selaginella lepidophylla) with yeast. The fermentation process breaks down the plant material into smaller molecules that are easier for skin to absorb. It's thought to help skin hold onto moisture and stay resilient, similar to how the plant survives extreme dryness. You'll find it in hydrating serums and essences aimed at soothing and plumping the skin.
What does Fermented Spikemoss Extract do in a beauty product?
The fermentation process generates bioactive compounds that may support the skin's natural moisture barrier. The filtrate is thought to provide humectant properties (attracting water to the skin) and help maintain a healthy skin microbiome by delivering prebiotic-like nutrients.
Is Fermented Spikemoss Extract safe for most people?
Considered safe for topical use with low irritation and comedogenic risk. As with any fermented ingredient, patch test if you have a history of yeast sensitivity.
Who should be careful with Fermented Spikemoss Extract?
Individuals with known yeast allergies Those who prefer non-fermented ingredients due to sensitivity
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.