Bayer vs DHC

Questions and answers

Research behind their key ingredients

• Anti-aging and brightening effects of a topical treatment containing vitamin C, vitamin E, and raspberry leaf cell culture extract: A split-face, randomized controlled trial

  Tocopherol · Journal of Cosmetic Dermatology, 2020

• Efficacy and Safety of Azelaic Acid Nanocrystal-Loaded In Situ Hydrogel in the Treatment of Acne Vulgaris

  Azelaic acid · Pharmaceutics, 2021

• 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

• Effects of 15% Azelaic Acid Gel in the Management of Post-Inflammatory Erythema and Post-Inflammatory Hyperpigmentation in Acne Vulgaris

  Azelaic acid · Dermatology and Therapy, 2024

• Efficacy and Tolerability of Topical Nicotinamide Plus Antibacterial Adhesive Agents and Zinc-Pyrrolidone Carboxylic Acid Versus Placebo as an Adjuvant Treatment for Moderate Acne Vulgaris in Indonesia: A Multicenter, Double-blind, Randomized, Controlled Trial

  Zinc pca · The Journal of Clinical and Aesthetic Dermatology, 2020

• The usefulness of a dermocosmetic containing Myrtus communis extract and azelaic acid for maintenance phase of adult female acne: Results from a randomized exploratory investigator-blinded comparative study

  Azelaic acid · Journal of the European Academy of Dermatology and Venereology, 2023

• Formulation strategies to modulate the topical delivery of anti-inflammatory compounds

  Stearyl glycyrrhetinate · Journal of Cosmetic Science, 2013

• Clinical Development and Evaluation of a Multi-Component Dissolving Microneedle Patch for Skin Pigmentation Disorders

  3-o-ethyl ascorbic acid · Polymers, 2023

• Effect of an Emollient Emulsion Containing 15.0% of Caprylic/Capric Triglyceride on the Urocanic Acid of the Stratum Corneum

  Caprylic capric triglyceride · Life, 2023

• Efficacy of a Topical Formulation on Skin Hydration and Barrier Function in Individuals With Xerosis: A 28-Day Randomized, Split-Leg, Untreated-Controlled Trial

  Dipotassium glycyrrhizate · Journal of Cosmetic Dermatology, 2026

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.