Bacillus/Canavalia Gladiata Seed Ferment Extract: 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 Bacillus/Canavalia Gladiata Seed Ferment Extract?

Bacillus/Canavalia Gladiata Seed Ferment Extract comes from the seeds of Canavalia gladiata, a climbing bean also known as sword bean. The seeds are mixed with a safe strain of the Bacillus microbe, allowed to ferment, then filtered and refined into a clear liquid. Fermentation breaks down large seed proteins and sugars into smaller, skin-friendly molecules and it boosts the level of natural moisturizers called amino acids. Cosmetics makers began exploring fermented plant extracts in the early 2000s as Korean beauty trends grew worldwide, and this bean ferment joined product lines soon after thanks to its strong hydrating profile.

The extract is produced in a controlled tank. First, cleaned seeds are ground and blended with water. Bacillus culture is added and the mix ferments for several days. Afterward it is heated to stop fermentation, filtered to remove solids, and blended with skin-safe preservatives. The finished ingredient is water-soluble and easy to add to formulas.

You will most often see Bacillus/Canavalia Gladiata Seed Ferment Extract in lightweight moisturizers, hydrating serums, sheet masks, soothing after-sun gels, barrier repair creams and anti-aging blends that aim to keep skin supple.

Bacillus/Canavalia Gladiata Seed Ferment Extract’s Cosmetic Benefits/Uses

This bean ferment plays two main roles in skincare formulas:

  • Humectant – pulls water from the air and deeper skin layers to the surface so skin feels soft and looks plump, which can smooth the look of fine lines
  • Skin protecting – forms a light film that helps reduce moisture loss and buffers skin against everyday irritants supporting a healthy barrier

Who Can Use Bacillus/Canavalia Gladiata Seed Ferment Extract

This ferment suits almost every skin type. Dry and dehydrated skin benefit most from its humectant action while normal, combination and oily complexions appreciate the light non greasy feel. Sensitive skin generally tolerates it because it has a mild pH and lacks harsh solvents. People with a known allergy to legumes should be cautious since the source bean belongs to that food family, though the proteins are largely broken down during fermentation.

The ingredient is made from plant seeds and a harmless soil bacterium, with no animal material involved. When the finished formula also avoids animal derived additives it is considered suitable for both vegans and vegetarians.

Pregnant or breastfeeding users face no specific warnings because the extract sits on the skin surface and has minimal absorption. This is not medical advice and anyone expecting or nursing should still show the full ingredient list of any product to a qualified doctor before regular use.

Bacillus/Canavalia Gladiata Seed Ferment Extract does not increase photosensitivity so it can be used morning or night. It layers well with common actives like niacinamide or hyaluronic acid and is water soluble so it rinses away cleanly.

Potential Side Effects/Adverse Reactions

Reactions to topical Bacillus/Canavalia Gladiata Seed Ferment Extract vary from person to person. The points below outline potential issues, though most users will never experience them when the ingredient is properly formulated and preserved.

  • Redness or tingling in very reactive skin
  • Itchiness or hives in individuals allergic to legumes
  • Mild stinging when layered immediately after strong exfoliating acids
  • Breakouts if the finished product is contaminated or if the user is sensitive to added preservatives rather than the extract itself
  • Contact dermatitis from rare sensitivity to fermentation byproducts

If any undesirable reaction develops stop using the product and seek advice from a dermatologist or healthcare provider.

Comedogenic Rating

Rating: 0 / 5

Bacillus/Canavalia Gladiata Seed Ferment Extract is a water based ingredient with no fatty oils or waxes that could clog pores. Its molecules are small, light and easily rinsed away which keeps residue from building up inside follicles. Because it mainly acts as a humectant and barrier booster rather than an occlusive, it earns the lowest possible score on the comedogenic scale.

That means the extract is generally suitable for people who are prone to acne or frequent breakouts.

Keep in mind the finished product’s overall formula matters most. Heavy butters, silicones or poorly preserved water phases can still cause congestion even when this ferment itself is pore friendly.

Summary

Bacillus/Canavalia Gladiata Seed Ferment Extract hydrates by drawing moisture toward the skin surface and helps guard the barrier with a thin protective film. Fermentation boosts its pool of amino acids which further attract water and soothe dryness.

While not yet as famous as hyaluronic acid or glycerin, this bean ferment is gaining traction in K-beauty inspired moisturizers, fresh gels and calming masks thanks to its lightweight feel and plant based appeal.

Overall safety is high. It sits on the skin, has minimal absorption and rarely triggers irritation except in those with specific legume allergies. As with any new skincare ingredient it is wise to perform a small patch test before full use to confirm personal compatibility.

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