# Ferment Page: https://lovi.care/skincare/ie/ingredients/ferment The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for Ireland. Applying a skincare lotion with probiotic ferment lysate softens dry areas, calms visible redness, and boosts daily moisture for sensitive skin. This gentle ingredient suits most skin types and appears most often in lightweight [serums](https://lovi.care/skincare/ie/ingredients/serum). Because of its fluid texture, the product layers easily into any existing daily routine. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) This page shows ferment products with a Lovi page. For every product, and a routine built for your skin, use the Lovi app. ### Popular ferment products - [AMOREPACIFIC Vintage Single Extract Essence](https://lovi.care/skincare/ie/p/amorepacific/vintage-single-extract-essence/for/sensitive-skin) — High fit ## Questions and answers ### What does ferment do for the skin? Ferment helps improve skin moisturization and barrier strength while reducing redness. Applying a lotion with probiotic ferment lysate for 30 days may decrease transepidermal [water](https://lovi.care/skincare/ie/ingredients/water) loss in sensitive skin. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) ### How do you use ferment? You apply a probiotic ferment lotion twice daily for 30 days to help decrease skin redness and transepidermal water loss while increasing skin moisturization. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) ### Should you use ferment in the morning or at night? You may use ferment both in the morning and at night. Applying a lotion with probiotic ferment lysate helps improve skin moisturization and barrier function over time. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) ### Can you use ferment every day? Yes, you can use ferment every day, as applying a lotion with probiotic ferment lysate for 30 days helps improve skin moisturization and reduce redness. It is safe for daily use to help support the skin barrier. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) ### Does ferment cause purging or irritation? Ferment is unlikely to cause irritation and is not known to cause skin purging. In fact, applying a lotion containing probiotic ferment lysate for thirty days may help decrease skin redness and improve skin barrier function for sensitive skin. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) ### Which skin types is ferment best for? Ferment is best for sensitive skin, as it helps decrease water loss and redness while increasing moisturization. You can use it daily with popular products like AMOREPACIFIC Vintage Single [Extract](https://lovi.care/skincare/ie/ingredients/extract) Essence. [Scientific Reports, 2023](https://pubmed.ncbi.nlm.nih.gov/37803101/) ## Research on ferment - [Effects of a lotion containing probiotic ferment lysate as the main functional ingredient on enhancing skin barrier: a randomized, self-control study](https://pubmed.ncbi.nlm.nih.gov/37803101/) Ferment · Scientific Reports, 2023 ## Brands with ferment - Korean skincare: [AMOREPACIFIC](https://lovi.care/skincare/ie/brands/amorepacific) ## About the Lovi Fit Lovi: Unbiased, science-based skincare AI trained on real user outcomes. Lovi checks every ingredient with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning. Behind this ingredient guide: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board). Page built Nov 8, 2026. More from Lovi: https://lovi.care/skincare/llms.txt ## This page in other countries - United States: https://lovi.care/skincare/ingredients/ferment - United Kingdom: https://lovi.care/skincare/uk/ingredients/ferment - Ireland: https://lovi.care/skincare/ie/ingredients/ferment (this page) - Germany: https://lovi.care/skincare/de/ingredients/ferment - France: https://lovi.care/skincare/fr/ingredients/ferment - Italy: https://lovi.care/skincare/it/ingredients/ferment - Netherlands: https://lovi.care/skincare/nl/ingredients/ferment - Spain: https://lovi.care/skincare/es/ingredients/ferment - Canada: https://lovi.care/skincare/ca/ingredients/ferment - Australia: https://lovi.care/skincare/au/ingredients/ferment - Singapore: https://lovi.care/skincare/sg/ingredients/ferment - Saudi Arabia: https://lovi.care/skincare/sa/ingredients/ferment - United Arab Emirates: https://lovi.care/skincare/ae/ingredients/ferment