Pseudozyma Epicola/Sunflower Seed Oil 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: July 1, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate?

Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate comes from sunflower seed oil that has been fermented with the yeast Pseudozyma epicola. During fermentation the yeast breaks down parts of the oil and creates new skin-friendly molecules like polysaccharides, amino acids and enzymes. After fermentation the mixture is gently filtered, leaving a clear liquid rich in these helpful compounds.

Fermented plant oils began to gain attention in Asian beauty labs in the early 2000s because they were seen as a way to boost the natural benefits of familiar oils without heavy processing. As formulators looked for gentler, more sustainable ingredients this sunflower oil ferment found its way into skincare and haircare labs around the world.

The production process is fairly simple: high quality sunflower seed oil, water and the Pseudozyma epicola culture are combined in controlled tanks. The mix ferments for several days while temperature and pH are watched closely. When the reaction is complete the liquid is pressed, clarified and filtered to remove any solids. The end product is a light, water-soluble filtrate that slips easily into modern cosmetic bases.

You will most often see Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate in hydrating serums, daily moisturizers, calming face masks, lightweight lotions, scalp tonics and anti-aging blends. Its mix of oil-derived nutrients and water-loving sugars makes it versatile in both skin and hair formulas.

Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate’s Cosmetic Benefits/Uses

This fermented filtrate supports formulas in several helpful ways:

  • Emulsion stabilising: Helps keep oil and water phases from separating so creams and lotions stay smooth and consistent during shelf life
  • Hair conditioning: Forms a light film on strands that smooths the cuticle for better shine, softness and easier detangling
  • Humectant: Attracts and binds moisture to the skin surface which boosts hydration and gives a plumper appearance
  • Skin conditioning: Supplies fatty acid fragments and sugars that soften rough patches and support a healthy skin barrier

Who Can Use Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate

This ferment filtrate is gentle enough for most skin types. Dry and normal skin will like its water-binding sugars while oily and combination skin can use it because it is lightweight and water soluble. Sensitive skin usually tolerates it well since the fermentation step removes much of the heavy oil, though anyone with a known sunflower seed allergy should be cautious.

The ingredient is plant based and no animal derivatives are used in the fermentation or filtering steps, so it is suitable for both vegans and vegetarians.

Current safety data shows no reason it would be harmful in pregnancy or while breastfeeding. Still, this is not medical advice and anyone who is pregnant or nursing should ask a doctor before adding new cosmetic products.

Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate does not make skin more sensitive to sunlight, so it is not considered photosensitising. Of course daily sunscreen is still smart for overall skin health.

Potential Side Effects/Adverse Reactions

Side effects from topical use of Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate differ from person to person. The points below list potential issues. They are uncommon when the ingredient is used at normal levels in a well-made product.

  • Redness or stinging A small number of users may feel mild warmth or see short-lived redness, often due to individual sensitivity rather than the ingredient itself
  • Contact dermatitis Very rarely the skin may develop an itchy rash if it overreacts to one of the fermented compounds
  • Allergic response People with a true sunflower seed allergy could experience swelling, hives or other signs of allergy
  • Eye irritation If a formula containing the filtrate accidentally gets into the eyes it may cause temporary burning or watering

If any of these effects appear stop using the product and seek medical advice if irritation does not fade quickly.

Comedogenic Rating

Rating: 1 out of 5. Although the filtrate originates from sunflower seed oil, the fermentation and filtration steps strip away most of the heavier triglycerides that could clog pores. What remains is a light, water-soluble mix of humectant sugars and small fatty acid fragments that generally sit well on the skin without blocking follicles.

Because of this low score the ingredient is usually considered safe for skin prone to acne or breakouts.

Formulas that pair the filtrate with heavier oils or waxes can raise a product’s overall comedogenic potential, so the full ingredient list still matters.

Summary

Pseudozyma Epicola/Sunflower Seed Oil Ferment Extract Filtrate acts as an emulsion stabiliser, humectant, skin conditioner and hair conditioner. Fermentation creates small, skin-friendly molecules that bind water, smooth texture and help keep oil-water blends from separating, while the remaining fatty acid fragments lightly coat hair and skin for softness.

The ingredient is gaining quiet popularity in K-beauty and indie formulations thanks to its multitasking nature and gentle profile, though it is still far from a household name.

Current data shows a low risk of irritation or pore blockage, making it broadly safe for daily use. As with any new cosmetic, patch test first to make sure your skin agrees with it.

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