What Is Kluyveromyces/Lactobacillus/Brassica Napus Seed Oil Ferment Filtrate?
Kluyveromyces/Lactobacillus/Brassica Napus Seed Oil Ferment Filtrate starts with canola seeds, which come from the Brassica napus plant. The oil pressed from those seeds is rich in healthy fatty acids. Cosmetic chemists take that oil and let two friendly microorganisms, the yeast Kluyveromyces and the probiotic Lactobacillus, ferment it. During fermentation the microbes break down large oil molecules into smaller ones and release peptides, antioxidants and moisture-binding sugars. Once fermentation is complete, the mixture is filtered to remove any solid residue, leaving a clear nutrient-packed liquid known as a ferment filtrate.
Fermented plant oils have been part of traditional beauty rituals in parts of Asia for decades because fermentation boosts skin absorption and creates new skin-loving compounds. Modern labs picked up on this idea in the early 2000s and began adding specific microbes for more controlled results. Today this particular ferment filtrate shows up in a variety of products such as lightweight serums, rejuvenating masks, daily moisturizers, anti-aging creams, leave-in hair conditioners, scalp tonics and restorative shampoos.
Kluyveromyces/Lactobacillus/Brassica Napus Seed Oil Ferment Filtrate’s Cosmetic Benefits/Uses
When added to a formula this multitasking ferment brings several helpful properties:
- Antioxidant – Helps neutralize free radicals created by UV rays and pollution so it supports healthier looking skin and hair and can extend product shelf life
- Hair conditioning – Smooths the cuticle, adds light moisture and reduces static which leaves strands softer and shinier without heaviness
- Skin conditioning – Supplies essential fatty acids and humectant sugars that reinforce the skin barrier, improve softness and enhance overall radiance
Who Can Use Kluyveromyces/Lactobacillus/Brassica Napus Seed Oil Ferment Filtrate
This ferment filtrate is lightweight, mildly moisturizing and non greasy so it suits most skin types including dry, normal, combination and oily. Sensitive skin generally tolerates it well because the fermentation process reduces potential irritants, although anyone with a known allergy to canola or yeast-derived ingredients should proceed cautiously. The ingredient is plant based and produced with probiotic microbes, making it appropriate for both vegetarians and vegans.
Current research shows no specific concerns for pregnant or breastfeeding women when the ingredient is used topically and at the low percentages found in cosmetics. That said this is not medical advice, and anyone who is pregnant or nursing should check with a healthcare professional before adding new products to their routine.
The filtrate does not increase the skin’s sensitivity to sunlight, so it is not considered photosensitizing. It also rinses clean and is silicone free which means it works for all hair textures, including color-treated strands.
Potential Side Effects/Adverse Reactions
Reactions to topical Kluyveromyces/Lactobacillus/Brassica Napus Seed Oil Ferment Filtrate vary from person to person. The effects listed below are possible yet uncommon when the ingredient is properly formulated and used as directed.
- Mild redness or stinging
- Itching in individuals allergic to canola derivatives
- Rare yeast sensitivity reactions such as small bumps
- Contact dermatitis if combined with other harsh actives in the same product
If any irritation or discomfort develops stop use immediately and consult a qualified healthcare provider or dermatologist.
Comedogenic Rating
Rating: 1/5
The base oil from canola seeds already rates low on the comedogenic scale and the fermentation process further breaks the fatty acids into smaller, more skin-friendly molecules that absorb quickly instead of sitting on the surface. The end filtrate is lightweight and water compatible, leaving very little residue that could clog pores. Because of this the ingredient is generally suitable for acne-prone or breakout-prone skin types. People who struggle with extremely stubborn or cystic acne may still prefer to patch test products containing it, but overall risk of pore blockage is minimal.
One extra point to note is that the final rating also depends on the full formula. Heavy occlusives or waxes paired with the ferment could raise a product’s overall comedogenic potential even though the ferment itself remains low.
Summary
Kluyveromyces/Lactobacillus/Brassica Napus Seed Oil Ferment Filtrate acts as an antioxidant, skin conditioner and hair conditioner. Fermentation generates peptides, humectant sugars and smaller fatty acids that neutralize free radicals, reinforce the skin barrier, soften hair cuticles and add light moisture without greasiness. While not yet a household name, the ingredient is gaining attention in K-beauty inspired serums and clean hair treatments thanks to its multitasking nature and gentle profile.
Current data and real-world use show the filtrate is safe for topical application with a very low incidence of irritation or pore blockage. Still, everyone’s skin is unique so it is smart to patch test any new product that contains this ferment before full use.