For your skin
A small molecule your skin already makes. Low concentrations deeply hydrate dry skin; higher concentrations soften thick, scaly patches. A workhorse for eczema and ichthyosis.
Want the science? Keep reading ↓Mechanism of action
Small humectant and natural moisturizing factor component; below 10% hydrates and supports barrier protein expression, above 10% acts keratolytically to soften thickened scale.
Why we tier this strong
4 cited papers across 3 countries. Multiple positive efficacy results plus regulatory backing. Clears our published bar (Strong = 15+ studies with multiple randomized controlled trials (RCTs), or a single large longitudinal cohort).
Cited research
Jawed I et al., Effect of topical treatment with urea in ichthyosis, atopic dermatitis, psoriasis, and other skin conditions: a systematic review, Annals of Medicine and Surgery 2025
Piquero-Casals J, Morgado-Carrasco D, Granger C, Trullas C, Jesus-Silva A, Krutmann J, Urea in Dermatology: A Review of its Emollient, Moisturizing, Keratolytic, Skin Barrier Enhancing and Antimicrobial Properties, Dermatology and Therapy (Heidelberg) 2021;11(6):1905-1915
Ademola J, Frazier C, Kim SJ, Theaux C, Saudez X, Clinical evaluation of 40% urea and 12% ammonium lactate in the treatment of xerosis, American Journal of Clinical Dermatology 2002;3(3):217-22 — randomized double-blind comparison; 40% urea cream achieved improvement faster than 12% ammonium lactate lotion across hydration, texture, and roughness
Ganemo A, Virtanen M, Vahlquist A, Improved topical treatment of lamellar ichthyosis: a double-blind study of four different cream formulations, British Journal of Dermatology 1999;141(6):1027-32 — double-blind comparative trial including 5% urea cream as one of four formulations for lamellar ichthyosis
Sources: PubMed · KCI · J-Stage · CNKI · Wanfang · SFD · MFDS · Cochrane · SCCS · CIR. Every entry points to a specific document. See methodology for what each outcome label means.