What Is Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate?
Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate is a skin care ingredient that starts with petals from the wild rose species Rosa multiflora. These petals are submerged in a controlled solution and inoculated with Lactobacillus, a friendly bacterium often used in food fermentation. Over several days the bacteria break down the flower material, releasing helpful phytochemicals and creating new skin-loving compounds like peptides, organic acids and antioxidants. Once the process finishes the mixture is filtered to remove solids, leaving a clear watery liquid known as the filtrate.
Fermented botanical extracts gained popularity in Korean skin care during the early 2010s because the process can boost the bioavailability of plant nutrients. Brands soon adopted fermented rose filtrates for their gentle antioxidant profile and moisture support, and today the ingredient appears in a broad range of beauty products worldwide.
You will most often see Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate in hydrating toners, essence-style boosters, sheet masks, soothing gels, lightweight moisturizers and many anti-aging serums. Formulators like it because it is water soluble, has a low odor and pairs well with both traditional plant extracts and modern actives like niacinamide or peptides.
Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate’s Cosmetic Benefits/Uses
This fermented rose filtrate brings a short but valuable list of perks to skin care formulas:
- Antioxidant: Helps neutralize free radicals generated by UV light and pollution, which supports a brighter tone and can soften the look of fine lines over time
- Humectant: Draws water to the outer skin layers, improving immediate hydration and giving skin a plump dewy feel while helping other moisturizers work better
Who Can Use Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate
This fermented rose filtrate is generally suitable for all skin types, including dry, combination, oily and sensitive skin, because it is water light, non occlusive and free of strong fragrances or essential oils that often trigger irritation. Acne-prone users tend to tolerate it well since it is not oily and has a very low likelihood of clogging pores. Extremely reactive or allergy-prone skin should still introduce it slowly, simply because any new botanical material carries a small risk of sensitization.
The ingredient is derived from plant petals and a food-grade probiotic microorganism, with no animal inputs or by-products, so it aligns with vegan and vegetarian lifestyles.
No specific safety flags exist for pregnancy or breastfeeding, yet hormone-driven skin changes can make some people more reactive. This information is not medical advice; anyone who is pregnant or nursing should discuss new skincare products with a qualified healthcare professional first to be safe.
Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate is not known to increase photosensitivity. Standard daytime sunscreen habits are still recommended for overall skin health, but no extra precautions are required solely because of this ingredient.
Potential Side Effects/Adverse Reactions
Responses to topical Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate differ from person to person. The effects listed below are possible yet uncommon when the ingredient is formulated correctly and used as directed.
- Mild redness or stinging in very sensitive skin, usually transient
- Allergic contact dermatitis presenting as itching, swelling or a rash if someone is specifically allergic to rose components or fermentation by-products
- Breakouts if combined with highly occlusive products that trap sweat and oil, though the filtrate itself is non comedogenic
- Irritation around broken skin because botanical acids created during fermentation can tingle on open cuts or abrasions
- Spoilage-related reactions such as unexpected odor, color change or skin irritation if a product is contaminated or past its expiration date
If any unwanted reaction occurs stop using the product immediately and consult a medical professional if symptoms persist or worsen.
Comedogenic Rating
Rating: 0/5. Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate is a water-light liquid with no oils, waxes or fatty acids that could block pores. Its molecules are small, absorb quickly and leave no residue, so it earns the lowest possible score for clogging potential.
Because of this rating the ingredient is considered friendly for skin that is prone to acne or breakouts.
As with any watery botanical, the final formula matters. If the filtrate is blended into a heavy cream packed with rich emollients the overall product may still feel greasy. Check the whole ingredient list when acne is a concern.
Summary
Lactobacillus/Rosa Multiflora Flower Ferment Extract Filtrate works mainly as an antioxidant and humectant. Fermentation unlocks polyphenols from the rose petals, adds new organic acids and peptides, and makes them more readily absorbed so they can scavenge free radicals and help calm environmental stress. The same process leaves behind natural sugars and amino acids that draw water into the outer skin layers for a plumper, fresher look.
The ingredient enjoyed a surge of popularity after K-beauty brands highlighted fermented botanicals, and it still shows up in toners, essences and gel moisturizers, though it is less of a buzzword today than trendsetters like niacinamide or hyaluronic acid.
Overall safety is high: it is vegan, non-phototoxic, low in allergens and non-comedogenic. Most users experience no issues, yet skin is personal so patch testing any new product is a smart habit.