What Is Galactomyces/Phellinus Linteus Extract Ferment Filtrate?
Galactomyces/Phellinus Linteus Extract Ferment Filtrate is a liquid derived from fermenting the extract of Phellinus linteus, a medicinal mushroom, with the friendly yeast Galactomyces. During fermentation the yeast breaks down the mushroom’s complex molecules into smaller skin-friendly compounds, leaving behind a filtrate rich in amino acids, peptides, minerals, beta glucans and natural antioxidants.
The cosmetic world first noticed Galactomyces decades ago when workers in sake breweries were found to have unusually smooth youthful hands. Brands soon began exploring other beneficial ferments, including teaming Galactomyces with Phellinus linteus to merge the mushroom’s soothing antioxidant power with the moisturizing punch of the yeast ferment. The process starts with water or gentle solvents pulling beneficial components from dried Phellinus linteus. Galactomyces is then added under controlled temperatures. After several days the mixture is filtered to remove solids and the clear active liquid is collected for use in skincare.
Because of its multitasking nature you will often spot this ferment filtrate in lightweight essences, anti aging serums, brightening ampoules, sheet masks, hydrating lotions and post-sun soothing gels.
Galactomyces/Phellinus Linteus Extract Ferment Filtrate’s Cosmetic Benefits/Uses
This fermented ingredient brings several useful actions to a formula:
- Humectant – draws water from the air and deeper skin layers to the surface, giving instant hydration and helping skin stay plump and comfortable
- Skin Conditioning – supplies amino acids and antioxidants that can improve skin softness, support a smoother texture and encourage a more even tone over time
- Skin Protecting – its beta glucans and polyphenols form a light shield that helps fend off pollution particles and oxidative stress, reducing the look of tired or stressed skin
Who Can Use Galactomyces/Phellinus Linteus Extract Ferment Filtrate
This ferment filtrate is lightweight and water based so it generally suits oily, combination and normal skin. Its humectant action can also relieve surface dryness making it friendly for many dry skin users when layered under richer creams. Sensitive skin often tolerates it well thanks to the soothing beta glucans in the mushroom extract, though anyone extremely reactive to yeasts or mushrooms should approach with caution.
The ingredient is produced by fermenting a mushroom extract with Galactomyces yeast and no animal by-products are involved so products featuring it are typically suitable for vegans and vegetarians. Always check the full formula to be sure other ingredients align with a vegan lifestyle.
Current research has not flagged any specific issues for pregnant or breastfeeding women when using this ingredient topically. Still, this is not medical advice so expectant or nursing mothers should review any skincare product with their physician before adding it to their routine.
Galactomyces/Phellinus Linteus Extract Ferment Filtrate does not make skin more sensitive to sunlight and can be used day or night without raising the risk of sunburn. Basic daily sunscreen protection is still recommended for overall skin health.
The ferment plays well with most other cosmetic actives including niacinamide, hyaluronic acid, peptides and gentle exfoliating acids so formulators often combine it in multi-benefit blends.
Potential Side Effects/Adverse Reactions
Reactions to topically applied Galactomyces/Phellinus Linteus Extract Ferment Filtrate differ from person to person. The points below list potential issues but most users will not experience them when the ingredient has been properly formulated and stored.
- Redness or flushing – can occur in very sensitive or compromised skin barriers
- Mild itching or tingling – usually short-lived as skin adjusts to the ferment compounds
- Contact dermatitis – rare but possible in individuals allergic to yeasts or mushrooms
- Breakouts – uncommon yet may happen if a formula contains occlusive ingredients that trap oil for acne-prone users
If any discomfort, rash or persistent irritation appears stop use immediately and seek advice from a qualified healthcare professional.
Comedogenic Rating
Rating: 1/5. Galactomyces/Phellinus Linteus Extract Ferment Filtrate is water based and rich in lightweight humectants, which means it absorbs quickly without leaving a greasy film that could clog pores. It contains no heavy oils or waxes commonly linked to breakouts, so the risk of blocked follicles is low.
Suitable for acne-prone skin, especially when formulated in fluid serums or essences that let the skin breathe. Only if the finished product pairs the ferment with thick occlusives might congestion become an issue.
Summary
Galactomyces/Phellinus Linteus Extract Ferment Filtrate hydrates by pulling water into the skin, conditions by supplying amino acids and antioxidants, and protects with beta glucans that help guard against pollution and daily stress. Fermentation breaks large mushroom molecules into smaller ones the skin can easily absorb, making its benefits fast acting.
The ingredient enjoys growing popularity in K-beauty inspired essences and masks yet is still a hidden gem in many Western lines, valued for giving a dewy glow without heaviness.
Topical use is considered very safe with low allergy rates, though anyone new to it should still patch test any product that contains the ferment to make sure it suits their individual skin.