Principia vs Jole

Questions and answers

Research behind their key ingredients

• The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer

  Niacinamide · The British Journal of Dermatology, 2002

• Effects of glyceryl glucoside on AQP3 expression, barrier function and hydration of human skin

  Glyceryl glucoside · Skin Pharmacology and Physiology, 2012

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

  Azelaic acid · Pharmaceutics, 2021

• A Double-Blinded, Randomized, Vehicle-Controlled Study of the Efficacy of Moisturizer Containing Licochalcone A, Decanediol, L-Carnitine, and Salicylic Acid for Prevention of Acne Relapse in Asian Population

  Salicylic acid · BioMed Research International, 2020

• Treatment of xerosis with a topical formulation containing glyceryl glucoside, natural moisturizing factors, and ceramide

  Glyceryl glucoside · The Journal of Clinical and Aesthetic Dermatology, 2012

• Efficacy of a multitargeted, salicylic acid-based dermocosmetic cream compared to benzoyl peroxide 5% in Acne vulgaris: Results from a randomized study

  Salicylic acid · Journal of Cosmetic Dermatology, 2024

• A Salicylic Acid-Based Dermocosmetic is Effective as an Adjunct to Benzoyl Peroxide for Mild to Moderate Acne and as Monotherapy in Maintenance Post Benzoyl Peroxide

  Salicylic acid · Journal of Drugs in Dermatology, 2023

• 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

• 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

• Impact of dermal emulsions containing diacyl phospholipids, mono acyl phospholipids, sodium lauryl ether sulfate and polysorbate 80 in combination with UVA irradiation on human skin physiology in vivo: A pilot study

  Sodium laureth sulfate · International Journal of Pharmaceutics, 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.