# Proprietary Page: https://lovi.care/skincare/ingredients/proprietary The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for the United States. Consistent application of the proprietary ingredient CLS02021 visibly increases skin moisture and elasticity while gently decreasing wrinkle depth and pore size for healthy volunteers, without any significant side effects. This formulation suits most skin types and is available in nourishing [serums](https://lovi.care/skincare/ingredients/serum). Furthermore, it layers easily into any daily skincare routine. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) This page shows proprietary products with a Lovi page. For every product, and a routine built for your skin, use the Lovi app. ### Popular proprietary products - [Endocare Tensage Cream](https://lovi.care/skincare/p/endocare/tensage-cream/for/mature-skin) — Average fit ## Questions and answers ### What does proprietary do for the skin? Proprietary helps increase skin moisture and elasticity while decreasing wrinkle depth and pore size. It is unlikely to cause significant side effects. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) ### How do you use proprietary? Proprietary ingredient CLS02021 helps increase skin moisture and elasticity and may decrease wrinkle depth and pore size when applied over a four-week period. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) ### Should you use proprietary in the morning or at night? You can use proprietary morning and night to help increase skin moisture and elasticity. It may also help decrease wrinkle depth and pore size. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) ### Can you use proprietary every day? Yes, you can use proprietary every day to help increase skin moisture and elasticity while decreasing wrinkle depth and pore size. Lovi rates this ingredient as Superior for everyday use. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) ### Does proprietary cause purging or irritation? Proprietary is unlikely to cause purging or irritation. Studies show that using it has no significant side effects while helping improve skin moisture and elasticity. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) ### Which skin types is proprietary best for? Proprietary is best for all skin types, as it helps increase moisture and elasticity while decreasing wrinkle depth and pore size. You can find it in Endocare Tensage Cream. [Medical Archives, 2022](https://pubmed.ncbi.nlm.nih.gov/35774045/) ## Research on proprietary - [The Moisturizing Efficacy of a Proprietary Dermo-Cosmetic Product( CLS02021) Versus Placebo in a 4-week Application Period](https://pubmed.ncbi.nlm.nih.gov/35774045/) Proprietary · Medical Archives, 2022 ## Brands with proprietary - Spanish skincare: [Endocare](https://lovi.care/skincare/brands/endocare) ## 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/proprietary (this page) - United Kingdom: https://lovi.care/skincare/uk/ingredients/proprietary - Ireland: https://lovi.care/skincare/ie/ingredients/proprietary - Germany: https://lovi.care/skincare/de/ingredients/proprietary - France: https://lovi.care/skincare/fr/ingredients/proprietary - Italy: https://lovi.care/skincare/it/ingredients/proprietary - Netherlands: https://lovi.care/skincare/nl/ingredients/proprietary - Spain: https://lovi.care/skincare/es/ingredients/proprietary - Canada: https://lovi.care/skincare/ca/ingredients/proprietary - Australia: https://lovi.care/skincare/au/ingredients/proprietary - Singapore: https://lovi.care/skincare/sg/ingredients/proprietary - Saudi Arabia: https://lovi.care/skincare/sa/ingredients/proprietary - United Arab Emirates: https://lovi.care/skincare/ae/ingredients/proprietary