Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate: 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: July 1, 2025
Share:
Inside this article:

We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate?

Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate is a modern skin care ingredient made by fermenting rose hybrid flower extract with the probiotic microorganism Lactobacillus. During fermentation the bacteria break down the flower compounds into smaller molecules, creating a lightweight liquid rich in amino acids, natural sugars, vitamins, mild organic acids and antioxidant polyphenols. The idea of using fermented botanicals took off in East Asian beauty labs in the early 2000s as brands searched for gentler yet more effective actives. Rose, already prized for its soothing scent and antioxidant profile, proved a perfect partner for probiotic processing. To create the filtrate fresh rose petals are extracted in water or a gentle solvent, the liquid is inoculated with Lactobacillus, left to ferment under controlled temperature then filtered to remove solids and microbes, leaving a clear nutrient rich solution ready for cosmetic use. You will most often see this filtrate in hydrating toners, soothing sheet masks, lightweight serums, anti-aging creams, after-sun gels and any formula that aims to boost softness and radiance without heaviness.

Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate’s Cosmetic Benefits/Uses

This rose ferment is prized for one main action in skin care.

Skin conditioning: The ferment delivers humectant sugars and skin-friendly acids that draw water to the surface, helping skin stay supple and comfortably hydrated. Its antioxidant polyphenols support the skin barrier against daily stress while the probiotic by-products create a slightly acidic environment that can keep the surface microbiome in balance. The result is smoother softer skin that looks refreshed and feels calm even in sensitive or mature complexions.

Who Can Use Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate

This rose ferment is generally considered friendly for all skin types. Its lightweight, water based texture suits oily or combination skin that dislikes heavy creams while the humectant sugars make it a welcome drink for dry or mature complexions. The gentle pH and soothing polyphenols mean sensitive or redness prone skin usually tolerates it well. Only those with a known allergy to roses or ferments should steer clear as they may experience irritation.

The ingredient contains no animal derived matter so it is normally suitable for vegans and vegetarians. Always check the finished product for additional ingredients like beeswax or animal based proteins if plant based living is important to you.

There are no reports linking this ferment to issues during pregnancy or breastfeeding. Because hormonal skin can change rapidly at these times it is still wise to run any new routine past a qualified doctor or midwife to stay on the safe side. Nothing in the ferment itself is known to enter the bloodstream in meaningful amounts from topical use.

Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate does not make skin more sensitive to sunlight and can be used morning or night without raising the risk of sunburn. As with all routines, daily sunscreen is still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Reactions to topical Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate vary from person to person. The following points list potential but unlikely side effects when the ingredient is included in well formulated products and used as directed.

  • Mild redness or stinging
  • Itchiness in individuals allergic to rose compounds
  • Temporary breakout if the formula contains comedogenic co-ingredients
  • Contact dermatitis triggered by fragrance if the ferment is scented

If you notice any of the above while using a product that contains this ferment stop application and consult a healthcare professional.

Comedogenic Rating

Rating: 0/5. Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate is a lightweight water based liquid with no thick oils or waxes that could clog pores. The molecules left after fermentation are mostly small humectant sugars, amino acids and gentle acids that sit on the surface then rinse away easily. Because it adds hydration without an occlusive film it earns the lowest possible score.

This makes the ingredient generally suitable for skin that is prone to acne or frequent breakouts. Do remember that the finished product’s overall formula, not just one ingredient, determines whether pores stay clear.

Summary

Lactobacillus/Rosa Hybrid Flower Extract Ferment Filtrate conditions skin by flooding it with water attracting sugars, soothing amino acids, mild organic acids that support a healthy pH and antioxidant polyphenols that help fend off daily stress. These elements come from the breakdown of rose compounds during Lactobacillus fermentation, which also leaves behind probiotic by products that can keep the skin’s surface flora in balance.

The ferment enjoys steady popularity in Korean and Japanese skin care where gentle hydration is key, though it is still a niche addition in Western lines. Its clean safety record, vegan friendly source and pleasant feel make it a welcome extra in toners, serums and masks.

Overall it is considered very safe with low risk of irritation or pore clogging. As with any new cosmetic it is smart to patch test a product containing this ferment before full use just to be sure it suits your individual skin.

Was this article helpful?
More from Glooshi:
ADVERTISEMENT
Get all our top headlines in beauty.
Delivered right to your inbox each week. Zero spam, all goodness, opt-out at anytime.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Get the latest beauty news, top product recommendations & brand-exclusive discount codes direct to your inbox.
Send good feedback:

All feedback is greatly appreciated, anonymous, and will be used to improve the quality of our articles.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Send bad feedback:

All feedback is greatly appreciated, anonymous, and will be used to improve the quality of our articles.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Search