What Is Lactobacillus/Codium Fragile/Ecklonia Cava/Undaria Pinnatifida Ferment Filtrate?
Lactobacillus/Codium Fragile/Ecklonia Cava/Undaria Pinnatifida Ferment Filtrate is a skin caring liquid made by fermenting three nutrient rich marine algae—Codium fragile, Ecklonia cava and Undaria pinnatifida—with the probiotic microorganism Lactobacillus. During fermentation the algae are broken down into smaller bioactive molecules such as amino acids, minerals and antioxidant polyphenols that skin can more easily absorb. The practice of fermenting plant extracts for beauty dates back centuries in East Asia and has surged in modern skincare, as fermentation is known to boost potency while lowering irritation potential.
The manufacturing process starts with sustainably harvested seaweed that is washed, finely milled and blended with a culture of Lactobacillus in a controlled environment. Over several days the mixture ferments, producing skin friendly metabolites. The finished brew is then filtered to remove solids, leaving a clear, lightweight filtrate ready for cosmetic use.
Brands add this ferment filtrate to a wide variety of leave on and rinse off products. You will often spot it in hydrating essences, sheet masks, lightweight serums, anti aging creams, soothing after sun gels and even gentle cleansers, where it works to replenish moisture and support a healthy skin barrier.
Lactobacillus/Codium Fragile/Ecklonia Cava/Undaria Pinnatifida Ferment Filtrate’s Cosmetic Benefits/Uses
This ferment filtrate is prized for one main job in skincare.
Skin conditioning: By delivering minerals, sugars and antioxidant compounds derived from the algae, the filtrate helps skin hold onto water, feel softer and appear smoother. Its mildly acidic profile also supports the skin’s natural pH, which can encourage a balanced microbiome and reduce the look of dullness or rough texture.
Who Can Use Lactobacillus/Codium Fragile/Ecklonia Cava/Undaria Pinnatifida Ferment Filtrate
This algae ferment is generally considered friendly to most skin types including dry, oily, combination, sensitive and mature. Its lightweight watery nature absorbs quickly without leaving residue so even those prone to congestion usually find it comfortable. People with known allergies to seaweed or fermented foods may want to steer clear since trace proteins from the original algae could spark a reaction.
The ferment is created from plant marine algae and the probiotic bacterium Lactobacillus, with no animal sourced inputs, which makes it suitable for both vegans and vegetarians.
Current data raises no specific red flags for women who are pregnant or breastfeeding. Because research on topical use during pregnancy is limited, this information is not medical advice and anyone expecting or nursing should check with a healthcare professional before adding new products.
The ingredient does not raise the skin’s sensitivity to sunlight so it is not considered photosensitizing. It can be used morning or night, though a separate broad spectrum sunscreen is still essential during the day.
Potential Side Effects/Adverse Reactions
Responses to topical Lactobacillus/Codium Fragile/Ecklonia Cava/Undaria Pinnatifida Ferment Filtrate differ from person to person. The points below list potential effects that might occur, although most users experience none of them when the ingredient is formulated correctly in a finished product.
- Temporary redness or mild tingling
- Itchiness or irritation in those with very sensitive or compromised skin
- Allergic contact dermatitis in individuals allergic to seaweed or fermentation by products
- Rare acne flares if the finished product contains heavy occlusive oils alongside the ferment
If any of these issues arise stop using the product and consult a dermatologist or healthcare provider for guidance.
Comedogenic Rating
Rating: 0 / 5 (non-comedogenic)
The ferment filtrate is a thin water-based liquid with little to no oil content so it does not block pores or feed acne-causing bacteria. Its light texture sinks in quickly and leaves no residue, making it friendly for skin that clogs easily.
Suitable for people who are prone to acne or breakouts.
Formulas that pair this ferment with heavy oils or waxes could still trigger congestion so always check the full ingredient list of the finished product.
Summary
Lactobacillus/Codium Fragile/Ecklonia Cava/Undaria Pinnatifida Ferment Filtrate is used mainly as a skin conditioning agent. Fermentation breaks the algae down into smaller molecules like amino acids, minerals and antioxidant compounds that draw in water, soften rough patches and support a balanced skin barrier.
While not yet a household name it is gaining interest in hydrating essences and soothing serums thanks to the current buzz around probiotic and marine skin care.
Overall it is considered safe for most users, with low risk of irritation or clogged pores. As with any new cosmetic ingredient it is smart to do a small patch test first to make sure your skin agrees with it.