REN Clean Skincare vs La Prairie

Questions and answers

Research behind their key ingredients

• Skin delivery of epigallocatechin-3-gallate (EGCG) and hyaluronic acid loaded nano-transfersomes for antioxidant and anti-aging effects in UV radiation induced skin damage

  Sodium hyaluronate · Drug Delivery, 2017

• Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidence

  Sodium hyaluronate · Dermatologic Therapy, 2022

• Topical use of dexpanthenol in skin disorders

  Panthenol · American Journal of Clinical Dermatology, 2002

• Antiaging effects of the mixture of Panax ginseng and Crataegus pinnatifida in human dermal fibroblasts and healthy human skin

  Panax ginseng root extract · Journal of Ginseng Research, 2017

• Ceramide 1 and ceramide 3 act synergistically on skin hydration and the transepidermal water loss of sodium lauryl sulfate-irritated skin

  Ceramide np · International Journal of Dermatology, 2008

• Green tea extract reduces induction of p53 and apoptosis in UVB-irradiated human skin independent of transcriptional controls

  Camellia sinensis leaf extract · Experimental Dermatology, 2009

• The 24-hour skin hydration and barrier function effects of a hyaluronic 1%, glycerin 5%, and Centella asiatica stem cells extract moisturizing fluid: an intra-subject, randomized, assessor-blinded study

  Glycerin · Clinical, Cosmetic and Investigational Dermatology, 2017

• Treatment of human skin with an extract of Fucus vesiculosus changes its thickness and mechanical properties

  Algae extract · Journal of Cosmetic Science, 2002

• A new topical panthenol-containing emollient: Results from two randomized controlled studies assessing its skin moisturization and barrier restoration potential, and the effect on skin microflora

  Panthenol · The Journal of Dermatological Treatment, 2017

• Structural characterization and in vivo evaluation of retinyl palmitate in non-ionic lamellar liquid crystalline system

  Retinyl palmitate · Colloids and Surfaces. B, Biointerfaces, 2011

• Anti-melanogenic property of ginsenoside Rf from Panax ginseng via inhibition of CREB/MITF pathway in melanocytes and ex vivo human skin

  Panax ginseng root extract · Journal of Ginseng Research, 2021

• High molecular compounds (polysaccharides and proanthocyanidins) from Hamamelis virginiana bark: influence on human skin keratinocyte proliferation and differentiation and influence on irritated skin

  Witch hazel leaf extract · Phytochemistry, 2001

• Double-blind, randomized, placebo-controlled study of a lotion containing triethyl citrate and ethyl linoleate in the treatment of acne vulgaris

  Triethyl citrate · The British Journal of Dermatology, 2007

• A Lipid Mixture Enriched by Ceramide NP with Fatty Acids of Diverse Chain Lengths Contributes to Restore the Skin Barrier Function Impaired by Topical Corticosteroid

  Ceramide np · Skin Pharmacology and Physiology, 2022

• Evaluation of dermal extracellular matrix and epidermal-dermal junction modifications using matrix-assisted laser desorption/ionization mass spectrometric imaging, in vivo reflectance confocal microscopy, echography, and histology: effect of age and peptide applications

  Palmitoyl tetrapeptide-7 · Journal of Cosmetic Dermatology, 2015

• Effect of a botanical cleansing lotion on skin sebum and erythema of the face: A randomized controlled blinded half-side comparison

  Salix nigra bark extract willow bark extract · Journal of Cosmetic Dermatology, 2019

• Anti-Inflammatory Effect of a Novel Topical Herbal Composition (VEL-091604) Consisting of Gentian Root, Licorice Root and Willow Bark Extract

  Salix nigra bark extract willow bark extract · Planta Medica, 2019

• An evaluation of the effect of a topical product containing salicin on the visible signs of human skin aging

  Salix nigra bark extract willow bark extract · Journal of Cosmetic Dermatology, 2010

• 'All-natural' anti-wrinkle emulsion serum with Acmella oleracea extract: A design of experiments (DoE) formulation approach, rheology and in vivo skin performance/efficacy evaluation

  Acmella oleracea extract · International Journal of Cosmetic Science, 2021

• Enzyme-Treated Caviar Prevents UVB Irradiation-Induced Skin Photoaging

  Caviar extract · Marine Drugs, 2022

• Investigating the Anti-Aging Effects of Caviar Oil on Human Skin

  Caviar extract · In Vivo, 2023

• Treatment of Postinflammatory Hyperpigmentation Following Acne With Microneedling and Panax Ginseng-Derived Exosomes

  Panax ginseng root extract · Plastic and Reconstructive Surgery. Global Open, 2025

• Effects of Investigational Moisturizers on the Skin Barrier and Microbiome following Exposure to Environmental Aggressors: A Randomized Clinical Trial and Ex Vivo Analysis

  Yeast extract · Journal of Clinical Medicine, 2023

• Dyspigmentation, skin physiology, and a novel approach to skin lightening

  Yeast extract · Journal of Cosmetic Dermatology, 2013

• The effect of a vitamin A palmitate and antioxidant-containing oil-based moisturizer on photodamaged skin of several body sites

  Retinyl palmitate · Journal of Cosmetic Dermatology, 2013

• Evaluation of the anti-aging effects of Zinc-α2-glycoprotein peptide in clinical and in vitro study

  Glycoproteins · Skin Research and Technology, 2024

• Evaluation of the Efficacy and Safety of a Panthenol-Enriched Mask for Skin Barrier Recovery After Facial Laser Treatment: Results of a Double-Blind Randomized Controlled Study

  Panthenol · Journal of Cosmetic Dermatology, 2025

• Preliminary safety and in vivo efficacy of Acmella oleracea extract-loaded glycolipid emulsion serum-Effects on ocular irritation, dermal absorption, and facial skin biophysical and microrelief properties

  Acmella oleracea extract · International Journal of Cosmetic Science, 2025

• A method for maintaining the clinical results of 4% hydroquinone and 0.025% tretinoin with a cosmeceutical formulation

  Yeast extract · Journal of Drugs in Dermatology, 2015

• Human Stem Cell-Derived Skin Progenitors Produce Alpha 2-HS Glycoprotein (Fetuin): A Revolutionary Cosmetic Ingredient

  Glycoproteins · Journal of Drugs in Dermatology, 2016

• Efficacy and safety of combination cream of stimu-tex AS™ (spent grain wax, Argania Spinosa Kernel oil, Butyrospermum Parkii (shea butter) extract), and saccharide isomerate after fractional CO2 laser procedure: split-face, double blinded, randomized controlled trial

  Shea butter, Saccharide isomerate · Lasers in Medical Science, 2025

• Targeting Circadian Rhythm for the Regulation of Skin Collagen Metabolism

  Palmitoyl tripeptide-1 · Journal of Cosmetic Dermatology, 2026

• Mechanistic understanding and peptide ingredient screening for type III collagen via biological knowledge graph and molecular docking

  Palmitoyl tetrapeptide-7 · International Journal of Cosmetic Science, 2026

• A novel facial moisturizer containing Saccharide isomerate accelerates skin barrier restoration following intense pulsed light treatment: a randomized split-face study

  Saccharide isomerate · The Journal of Dermatological Treatment, 2025

Behind this comparison

Lovi compares products by their fit scores, calculated from the full ingredient list with brand-independent rules our 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.