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Lactobacillus Ferment

What-it-does: soothing, preservative

Official CosIng Information


Lactobacillus ferment is an interesting probiotic ingredient with some promising properties. 

First, according to a 2009 Estee Lauder patent, it’s a DNA repair enzyme and it can help to protect the skin against environmental aggressors.

Second, still according to Estee Lauder research but now from 2012 the ingredient has anti-microbial and anti-inflammatory properties and holds promise in the treatment of acne and rosacea. For the former one 5% was needed to show effectiveness, but for reducing skin sensitivity already 1% showed results. 

The anti-acne effect is confirmed also by US manufacturer, Barnet, that says that Lactobacillus ferment is helpful in killing harmful bacteria and creating a healthy balanced microflora. Compared to well-known anti-acne and anti-inflammatory salicylic acid the probiotic worked faster at reducing the size and redness of acne lesions. 

It also goes by the trade name Leucidal Liquid SF and can serve in the formula as a natural preservative. 

Bottom line: It’s not the most proven ingredient (yet) but definitely a very promising one especially if you have sensitive skin, acne or rosacea.  

Show me some proof

  • Journal of cosmetic science, Nov-Dec 2012, Physiological effect of a probiotic on skin

Products with Lactobacillus Ferment

Ghost Democracy Clean Lightweight Daily Face Moisturizer Missha Time Revolution Immortal Youth Moisturiser SU:M37 Secret Programming Essence Tropic Pure Lagoon Blemish Prevention Serum CN Formulator Curcumin Essence Corpa Flora Antidote H+ Epicuren Discovery Acidophilus Probiotic Facial Cream Garden of Wisdom Hyaluronic Acid Serum Garden of Wisdom Neurophroline Serum Pai Back To Life Hydration Serum Sidmool Ultra Facial Moisturizing Chamile Decon-Gel AHC Ageless Real Eye Cream For Face Allies of Skin Molecular Multi-Nutrient Day Cream Artnaturals Luxe Cleansing Lotion Benefit Hangover Good In Bed Hydrating Serum DrGL Restore Gel Mask Heritage Store Aura Glow Gel Cream, Brightening Citrus Heritage Store Aura Glow Gel Cream, Calming Lavender KORA ORGANICS Turmeric 2-In-1 Brightening & Exfoliating Mask Novexpert Smoothing Toning Mist With Hyaluronic Acid Nu Skin Nutricentials pH Balance Mattefying Toner Orgaid Greek Yogurt & Nourishing Organic Sheet Mask Orgaid Vitamin C & Revitalizing Organic Sheet Mask Pai Lotus & Orange Blossom Bioaffinity Toner Province Apothecary Invigorating + Balancing Toner SKOON. Skincare Superfluity Moisture Gel Sepai Egf Youth Molecule Serum Your Best Face (YBF-Skincare) Rescue Face Serum Allies of Skin Bright Future Overnight Facial Code of Harmony Chill Gel Masque - Cbd Face Mask Dr. Brandt Poredermabrasion Garden of Wisdom Azelaic Acid 10% Serum Green Keratin Resurrection Re-Blossom Face Serum KORA ORGANICS Noni Bright Vitamin C Serum KORA ORGANICS Noni Night AHA Resurfacing Serum Lovely Day Botanicals Hyaluron + Bloom Tropical Hydration Nectar Pai Chamomile & Rosehip Calming Day Cream Tata Harper Resurfacing Mask Tropic Fruit Peel Resurfacing Serum Tropic Glow Berry Brightening Serum 3LAB Anti-Aging Eye Lift ASIS-TOBE Hyaluronic Essential Toner Akar skin Balance Toner Allies of Skin Molecular Saviour Probiotics Repair Mist BOSCIA Sake Hydrating And Brightening Serum Bite Beauty Changemaker Skin-Optimizing Primer (Hydrating) Buck Naked Soap Company Honeysuckle Facial Toner Skin Brightening Formula Cosmedix Reboot Overnight Hydration Complex First Aid Beauty Eye Duty Triple Remedy Am Gel Cream Garden of Wisdom Mandelic Acid 10% Serum