What Is Aeropyrum/Soybean Ferment Filtrate?
Aeropyrum/Soybean Ferment Filtrate is a skin care ingredient created by fermenting soybean seeds (Glycine max) with the microorganism Aeropyrum, an extremophilic archaeon known for thriving in very hot environments. The fermentation process breaks down large soybean proteins into smaller peptides and amino acids that are more readily absorbed by skin while also producing soothing sugars, natural lipids and antioxidant compounds.
The idea of using fermented soy in beauty dates back to traditional Asian skin care where fermented foods were prized for their nourishing effect. Modern cosmetic chemists adopted the concept in the early 2000s once gentle biotechnological filtration methods allowed the beneficial components of the ferment to be isolated without the heavier solids or odor commonly linked to raw soy products. Today manufacturers cultivate Aeropyrum in controlled tanks, introduce cleaned and crushed soybeans, let fermentation run for several days, then filter and refine the resulting liquid to create a light, fast-absorbing filtrate suitable for topical formulas.
You will most often spot Aeropyrum/Soybean Ferment Filtrate in lightweight moisturizers, balancing toners, anti-aging serums, clay or sheet masks aimed at oily or combination skin and leave-on spot treatments that target excess sebum.
Aeropyrum/Soybean Ferment Filtrate’s Cosmetic Benefits/Uses
This multitasking ferment offers several benefits when added to skin care products
- Anti-Sebum: Helps regulate the skin’s natural oil production, leaving the surface less shiny and reducing the look of enlarged pores which makes it valuable in formulas for oily or breakout-prone skin
- Skin Conditioning: Supplies amino acids, peptides and sugars that boost hydration and improve skin texture for a softer smoother feel
- Emollient: Adds a light layer of lipids that fills in microscopic rough spots, increasing suppleness without a greasy finish
- Skin Protecting: Provides antioxidants and soothing molecules that help shield skin from daily environmental stress such as pollution and mild irritation
Who Can Use Aeropyrum/Soybean Ferment Filtrate
This ferment filtrate suits most skin types thanks to its light texture and oil-balancing nature. Oily and combination skin often benefit the most because the ingredient helps curb excess sebum and refine the look of pores. Normal skin can use it for an extra boost of hydration and protection. Dry or very dry skin may still enjoy the soothing amino acids but will likely need a richer cream on top to lock in moisture.
Because it is derived from soybeans and a microorganism, with no animal by-products involved, Aeropyrum/Soybean Ferment Filtrate is generally considered appropriate for both vegans and vegetarians. Always check the full product label though since other ingredients in the formula might not share the same status.
The filtrate has no known hormone-like activity so it is not flagged as a problem for women who are pregnant or breastfeeding. That said this is not medical advice and anyone who is expecting or nursing should run any skin care product past a qualified doctor just to be safe.
The ingredient does not increase photosensitivity, meaning it will not make skin more prone to sunburn. Standard daytime sun protection is still recommended for overall skin health.
Potential Side Effects/Adverse Reactions
Side effects and reactions to the topical application of Aeropyrum/Soybean Ferment Filtrate can vary from person to person. The points below list potential issues only and most users will not experience them when the ingredient is formulated and used correctly.
- Mild redness or warmth shortly after application
- Temporary stinging on freshly exfoliated or compromised skin
- Allergic reaction in individuals with a soy allergy which could include itching or hives
- Contact dermatitis when paired with highly active exfoliating acids or retinoids in sensitive skin
- Rare clogging or small bumps in skin that reacts to any ferment-based ingredient
If a negative side effect occurs stop using the product and seek guidance from a medical professional or dermatologist.
Comedogenic Rating
Rating: 1/5 Aeropyrum/Soybean Ferment Filtrate is primarily a water-based ferment packed with small peptides sugars and lightweight lipids that absorb quickly rather than sit on the surface and clog pores. It has no heavy oils or waxes and even shows oil-balancing activity, keeping the likelihood of blocked follicles very low.
Because of this low rating the ingredient is generally suitable for skin that is prone to acne or breakouts. As always overall formula design matters; if the finished product pairs the ferment with thick butters or silicones the final comedogenic potential could rise.
Those with extremely reactive skin that breaks out from any ferment may still want to proceed with caution though such cases are rare.
Summary
Aeropyrum/Soybean Ferment Filtrate acts as an anti-sebum agent skin conditioner emollient and skin protector. Fermentation breaks down soybean proteins into readily usable amino acids peptides and sugars that hydrate and smooth while generating antioxidant molecules that defend against daily stress. Light lipids slip into rough patches to soften skin without greasiness and specific bioactive factors signal the sebaceous glands to dial back excess oil.
The ingredient enjoys moderate popularity especially in Korean and Japanese skin care where fermented extracts are a staple though it is still a relative newcomer in Western lines.
Overall safety is high with few reports of irritation apart from possible issues in those allergic to soy or extremely sensitive to ferments. As with any new skin care component it is wise to carry out a small patch test when first trying a product containing Aeropyrum/Soybean Ferment Filtrate just to be sure it agrees with your skin.