Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate?

Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate comes from the seeds of the Camellia japonica plant, a flowering shrub cherished in East Asia for its beauty and its naturally rich oil. To create the ingredient, producers first press or grind the seeds to release their oil and nutrients. This seed material is then mixed with Aspergillus, a safe food grade microorganism used for centuries to make items like soy sauce and sake. During a controlled fermentation, Aspergillus breaks large molecules into smaller ones that the skin can absorb more easily while also creating new skin-loving compounds. Once fermentation is complete, the mixture is filtered, leaving behind a clear liquid packed with peptides, amino acids, polyphenols, sugars and lightweight fatty acids. The filtrate’s blend of water-soluble and oil-soluble goodies makes it a versatile skin booster.

Camellia oil has long been applied by Japanese and Korean women to keep skin and hair supple. Modern labs took that tradition a step further, adding fermentation to increase potency and to give formulators a stable liquid that slips easily into water-based products. Today you will spot Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate in hydrating serums, anti-aging creams, daily moisturizers, soothing sheet masks, brightening essences and even some gentle exfoliating toners. Its lightweight texture allows it to layer well without feeling heavy or greasy.

Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate’s Cosmetic Benefits/Uses

This ingredient is valued mainly for one job, and it does that job well.

Skin conditioning: The ferment delivers moisturising sugars, barrier-supporting fatty acids and antioxidant polyphenols that leave skin feeling soft, smooth and comfortably hydrated. Regular use can improve overall texture, reduce the look of dryness and help protect against everyday environmental stress.

Who Can Use Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate

This ferment filtrate is generally friendly to all skin types. Lightweight and non greasy, it suits oily and combination skin while its hydrating sugars and fatty acids bring welcome comfort to normal and dry skin. Sensitive skin usually tolerates it well because it contains no added fragrance or harsh active acids. There are no known reasons to avoid it if you have mature skin or if you struggle with visible redness, though every complexion is unique so individual experiences can differ.

The ingredient is plant derived and produced through a microbial fermentation process that involves no animal products or by products, making it suitable for both vegetarians and vegans.

No studies show a risk when the ferment is used topically during pregnancy or while breastfeeding. It is considered a mild skin conditioning agent with no systemic absorption concerns. That said this is not medical advice and anyone who is pregnant or nursing should run any skincare routine past a qualified healthcare professional just to be on the safe side.

Unlike strong exfoliating acids or retinoids, Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate does not make skin more sensitive to sunlight. Normal daily sun protection habits are still encouraged but there is no extra photosensitivity risk tied to this ingredient.

Potential Side Effects/Adverse Reactions

Side effects and reactions to the topical application of Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate can vary from person to person. The list below covers potential issues, but they are uncommon when the ingredient has been correctly formulated and most users will not experience any negative effects.

  • Allergic contact dermatitis – very rare cases of stinging, redness or itching in individuals allergic to components of camellia seed or fermentation by products
  • Irritation on compromised skin – open cuts or severely broken skin may feel a mild sting because fermented liquids can be slightly acidic
  • Fungal or yeast sensitivity flare – users with a known sensitivity to Aspergillus derived ingredients could notice clogged pores or small bumps though this is uncommon
  • Ingredient interaction – layering immediately after a high concentration exfoliating acid may increase chances of tingling or temporary redness for some people

If you notice persistent irritation, rash or any discomfort while using this ingredient, stop application and consult a healthcare professional.

Comedogenic Rating

Rating: 0-1. This ferment filtrate is mostly water-based with only trace amounts of lightweight fatty acids, so it does not linger on the skin or block pores the way heavier oils can. Camellia seed itself ranks low on the comedogenic scale and the fermentation plus filtration steps remove much of the residual oil, pushing the rating even lower. In short, it is unlikely to trigger blackheads or whiteheads and is generally considered safe for acne-prone skin. Because every complexion is unique, very oily skin types may still prefer formulas where the ferment appears lower on the ingredient list.

Summary

Aspergillus/Camellia Japonica Seed Ferment Extract Filtrate is a mild skin conditioner that hydrates, softens and defends against daily environmental stress thanks to its mix of amino acids, sugars, polyphenols and light fatty acids created during fermentation. It slips easily into serums, creams and masks because its clear watery texture blends well with both water and oil phases, making it a flexible booster for many product types.

While not yet a household name, the ingredient is gaining steady traction in K-beauty and indie formulations that focus on fermented botanicals and gentle hydration. Its plant origin, vegan status and minimal risk profile add to the appeal for conscious consumers.

Current research and widespread use show it is safe for most skin types with a very low chance of irritation or clogged pores. Still, skin is personal so it is wise to patch test any new product containing this ferment to confirm compatibility before full use.

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