What Is Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate?
Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate is a skin care ingredient made by fermenting the peel extract of Citrus unshiu, a type of mandarin orange, with the mushroom Schizophyllum commune. During fermentation the fungus digests parts of the peel, releasing and transforming natural compounds into smaller, skin-friendly molecules. The resulting liquid is then carefully filtered to remove solids, leaving a clear nutritive filtrate packed with flavonoids, vitamin C derivatives, polysaccharides and enzymes.
Fermented botanicals gained popularity through East Asian beauty traditions that value the enhanced potency and gentleness fermentation offers. Brands soon adopted this particular ferment because Citrus unshiu peel is already rich in antioxidants while Schizophyllum commune is known for producing moisture-binding beta-glucans. Combining the two creates an ingredient that moisturizes and protects without feeling heavy.
The production process starts with collecting pesticide-free mandarin peels, which are cleaned and extracted with water or gentle solvents. Schizophyllum commune spores are added to the extract and allowed to ferment under controlled temperature and pH for several days. After fermentation the mixture is filtered and sterilized, yielding a stable water-soluble filtrate suitable for cosmetic use.
Formulators add this ferment filtrate to sheet masks, hydrating toners, anti aging serums, lightweight moisturizers, soothing gels, after sun lotions and eye creams where it can deliver both hydration and antioxidant support.
Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate’s Cosmetic Benefits/Uses
This multitasking ferment brings several useful properties to skin care formulas
- Antioxidant: Helps neutralize free radicals generated by UV light and pollution which supports a brighter more even complexion and can slow visible signs of aging
- Humectant: Draws water into the upper layers of skin boosting daily hydration levels and giving skin a plump fresh look
- Skin Conditioning: Softens and smooths the skin surface improving texture comfort and overall feel while prepping skin to better absorb other actives
Who Can Use Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate
This ferment filtrate is generally suitable for all skin types including dry, oily, combination, sensitive and mature because it offers lightweight hydration and antioxidants without clogging pores or leaving a greasy feel. Very few groups need to exercise extra caution: anyone with a known allergy to mushrooms, molds or citrus peel should avoid it since residual proteins or metabolites could trigger a reaction. Those dealing with severe eczema or open wounds may also wish to wait until the skin barrier is stronger before adding new actives.
The ingredient is produced through fungal fermentation of plant material and contains no animal derived substances so it aligns with vegan and vegetarian preferences.
No specific warnings exist for pregnant or breastfeeding women when this ferment is used topically at cosmetic levels. Still, this is not medical advice and expectant or nursing mothers should run any skincare product past their doctor to be safe.
Unlike some citrus extracts, this fermented filtrate has negligible amounts of photoreactive compounds so it is not known to increase photosensitivity. Normal daytime sun protection practices are still recommended for overall skin health.
Potential Side Effects/Adverse Reactions
Side effects and reactions to the topical application of Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate can vary from person to person. The following is a list of potential side effects that are considered uncommon when the ingredient is formulated and used correctly
- Allergic contact dermatitis
- Mild stinging or redness on very sensitive or compromised skin
- Temporary dryness if used in a formula with high alcohol content or strong exfoliants
- Interaction irritation when layered immediately with low-pH acids or potent retinoids in some individuals
If any negative reaction occurs discontinue use and consult a qualified healthcare professional
Comedogenic Rating
Rating: 1 out of 5. Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate is water based and light, containing mainly small antioxidant molecules and hydrophilic polysaccharides that do not sit heavily on the skin or block pores. It lacks the rich oils or waxes that typically raise comedogenic risk and is usually used at low percentages within a broader formula, so the chance of clogging is minimal.
That means it is generally suitable for people prone to acne or breakouts, provided the rest of the product is also low in pore-clogging ingredients.
Formulators sometimes pair this ferment with richer emollients to create a balanced texture; if you are highly blemish-prone check the full ingredient list rather than judging the product on this ferment alone.
Summary
Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate acts as an antioxidant, humectant and skin-conditioning agent. The fermentation process breaks down mandarin peel compounds and mushrooms’ beta-glucans into smaller molecules that mop up free radicals, pull moisture into the skin and leave it feeling soft and smooth.
While not as famous as niacinamide or hyaluronic acid this ferment has a steady following, especially among K-beauty fans who appreciate gentle multitaskers that layer well under light textures.
Topically it scores well on safety reports with low irritation and almost no photoreactivity. Still everybody’s skin is different so it is wise to patch test any new product containing this ingredient before making it a regular part of your routine.