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Hydrators

Urea

Also listed as Carbamide

Strong evidence 2–10% for hydration; 10–40% for rough, thickened skin

Urea is a natural component of the skin's moisturizing factor that hydrates at low concentrations and softens thick, rough skin at higher ones. It is a workhorse in creams for very dry hands, feet and body.

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What it does

The short version.

At 2–10%, urea acts as a humectant that draws water into the skin and helps restore barrier function. Above about 10% it also has a keratolytic effect, loosening and dissolving the thickened outer layer, which is why 20–40% products target calluses and cracked heels. It also enhances the penetration of other ingredients.

Strong evidence

Supported by many clinical studies in dry-skin conditions, summarized in dermatology reviews; it is a recommended emollient ingredient for very dry, rough skin.

Usually a good fit for

How to use it

Getting it right.

Apply once or twice daily to dry areas after bathing. Use lower strengths on the face and reserve high strengths for heels, elbows and calluses.

Layering

Friends & frenemies.

Go slow with

Not forbidden — just easier to over-do. Alternate nights or separate morning and evening.

Before you start

Can sting on cracked, inflamed or broken skin, especially at higher strengths. Avoid high-strength urea on the face and near the eyes. Very dry, itchy or cracked skin that does not improve should be checked by a clinician.

References

  1. 1Urea in Dermatology: A Review of its Emollient, Moisturizing, Keratolytic, Skin Barrier Enhancing and Antimicrobial Properties — Dermatology and Therapy (2021), via PubMed
  2. 2Urea — DermNet
  3. 3Dermatologists' top tips for relieving dry skin — American Academy of Dermatology

Educational, not medical advice. Ingredient guides summarise published research and expert guidance; formulas and concentrations differ between products.

No urea products reviewed yet.

We add products every week. The guide above still stands — and Beauty Match can find what suits you today.

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