What Is Lactobacillus/Schizosaccharomyces Ferment Filtrate?
Lactobacillus/Schizosaccharomyces Ferment Filtrate is a liquid obtained after the friendly bacteria Lactobacillus and the yeast Schizosaccharomyces are allowed to ferment a nutrient rich medium such as rice, barley or another plant extract. During fermentation these microorganisms break down sugars and proteins into smaller molecules like peptides, amino acids, vitamins and natural moisturising factors. Once the process is complete the mixture is carefully filtered to remove the live microbes, leaving behind a clear fluid packed with skin loving compounds.
Although probiotic inspired skincare feels like a modern idea formulators have borrowed from traditional fermentation for decades, first in Asian beauty products and later in global brands looking to harness gentle bioactive ingredients. As research grew on the skin’s microbiome companies saw the benefit of postbiotic ferments, leading to the adoption of this specific dual ferment in hydrating and soothing products.
The filtrate is made through controlled batch fermentation. Temperature, pH and oxygen are monitored to keep the microbes happy and productive, then the broth is microfiltered, sterilised and tested for safety before being added to cosmetic bases.
You will most often spot Lactobacillus/Schizosaccharomyces Ferment Filtrate in lightweight moisturisers, hydrating toners, sheet masks, anti ageing serums, soothing after sun gels and barrier repair creams. Its gentle profile means it can feature in formulas aimed at sensitive or post treatment skin as well.
Lactobacillus/Schizosaccharomyces Ferment Filtrate’s Cosmetic Benefits/Uses
This ferment brings two main actions to a formula
- Humectant: Draws water from the environment and the deeper layers of the skin toward the surface helping to keep the stratum corneum plump and supple while reducing the feeling of tightness
- Skin Conditioning: Supplies small peptides amino acids and vitamins that soften rough patches improve skin smoothness and support a healthy barrier resulting in a fresher more comfortable complexion
Who Can Use Lactobacillus/Schizosaccharomyces Ferment Filtrate
The gentle nature of this dual ferment means it suits almost every skin type. Normal, dry, combination and even oily complexions can benefit from the lightweight hydration while sensitive or barrier compromised skin usually tolerates it well thanks to its soothing components. There are no specific issues that make it unsuitable for acne prone or mature skin either although individual formulas can vary in richness so picking the right texture still matters.
Because the filtrate is produced by fermenting plant based mediums with bacteria and yeast it is free from animal derived matter which makes it appropriate for both vegans and vegetarians.
No data suggests topical use poses a risk to women who are pregnant or breastfeeding. That said this is not medical advice and anyone who is expecting or nursing should show the full ingredient list of any product to their healthcare provider before use to be extra cautious.
The ingredient does not increase photosensitivity so there is no special need to alter sun care habits beyond the daily SPF already recommended. It also plays nicely with most common actives like vitamin C niacinamide and retinoids allowing it to slot easily into existing routines.
Potential Side Effects/Adverse Reactions
Responses to Lactobacillus/Schizosaccharomyces Ferment Filtrate vary from person to person. The effects listed below are possible yet uncommon and most users will not encounter any problems when the ingredient is formulated and used correctly.
- Transient redness or flushing
- Mild itching or tingling as skin adjusts
- Localized irritation in people with extremely sensitive skin
- Rare allergic contact dermatitis due to individual immune response
- Breakouts if the finished product contains comedogenic co-ingredients
If any of these reactions occur stop using the product and seek advice from a healthcare professional or dermatologist.
Comedogenic Rating
Rating: 0/5. Lactobacillus/Schizosaccharomyces Ferment Filtrate is a water-based, microfiltered liquid that contains no heavy oils or waxes known to clog pores. Its small peptides and sugars sit lightly on the surface and are easily rinsed away, so they are unlikely to trap sebum or debris.
This makes the ingredient friendly for people prone to acne or breakouts.
Keep in mind that the finished product’s overall pore-clogging potential depends on every ingredient in the formula, not just the ferment itself.
Summary
Lactobacillus/Schizosaccharomyces Ferment Filtrate works mainly as a humectant and skin conditioner. It pulls water into the upper layers of skin then delivers a mix of amino acids, vitamins and peptides that smooth rough spots and support the moisture barrier.
The ferment is becoming more common in hydration focused toners, serums and creams, especially in K-beauty inspired lines, though it is not yet as widespread as classic hydrators like glycerin.
Topical use is considered very safe thanks to thorough filtration and low irritation reports. As with any new skincare product a quick patch test is sensible so you can spot any personal sensitivities before applying it to your whole face.