Urea Cream for Face and Body: 5%, 10% or 40% and What Each Does

Urea cream for the face works best at low strengths, usually 10% or less, where urea acts as a gentle humectant that draws water into the skin and supports the barrier. Around 10 to 20% suits rough body skin and keratosis pilaris, and 40% is a callus and nail treatment that doesn't belong on the face. The percentage decides whether urea moisturizes, smooths or dissolves thick skin.

Below we go through each strength, how one ingredient can both hydrate and exfoliate, how urea compares with lactic acid, and what to watch for if your skin is sensitive.

What does urea do for skin?

Urea is part of your skin's own moisturizing system. It is a component of the natural moisturizing factor (NMF), essential for hydration and stratum corneum integrity, according to a 2021 review in Dermatology and Therapy. When you put it on your skin, it does two jobs depending on the dose:

• Humectant: like glycerin and hyaluronic acid, it attracts and holds water in the outer layer. DermNet lists urea among the humectants that attract and retain water in the stratum corneum.
• Keratolytic: at higher strengths it loosens the bonds in keratin, the protein that makes up thickened, scaly skin. The same review describes urea denaturing keratin by breaking its hydrogen bonds, which loosens scale.

The review also credits urea with barrier-enhancing and antimicrobial properties, and notes that it can help other topical drugs penetrate. A separate review in Dermatologic Therapy makes the same point about enhancing the penetration of anti-inflammatory and antifungal drugs.

What do 5%, 10%, 20% and 40% urea do?

Low strengths mostly moisturize, middle strengths moisturize and smooth, and high strengths break down thickened skin. The cutoffs vary slightly between sources, but the pattern is consistent:

The 2021 review groups low concentrations of 2% to 10% for moisturizing and optimizing the skin's barrier function, a medium range of 10% to 30% for moisturizers and keratolytics, and 30% and above for keratolytic use and thick, localized skin such as callosities or corns. The Dermatologic Therapy review draws the line slightly lower: at 10% or less urea acts mainly as a moisturizer, and above 10% it becomes keratolytic.

How can one ingredient both hydrate and exfoliate?

At low doses urea mainly binds water; at high doses there is enough of it to disrupt the protein structure of dead skin. DermNet describes urea as keratolytic as well as humectant in the same breath, and the 2021 review explains the mechanism as urea breaking keratin's hydrogen bonds or altering its protein structure. Think of it as a dial: the more urea, the more it softens and lifts thickened, compacted cells, while still pulling in water.

This is why urea feels different from a scrub. It doesn't sand the surface. It loosens the bonds holding stuck cells together, so they shed more easily, and it leaves hydration behind as it does so.

Is urea safe for your face?

Low-percentage urea is generally a gentle face ingredient, and you'll find it in face moisturizers. The Ordinary's Natural Moisturizing Factors + HA, a face moisturizer, lists urea alongside glycerin and sodium hyaluronate, and was listed at $6.70 on the brand's US site as of October 2026. We review it in detail in our Natural Moisturizing Factors + HA review.

A few cautions apply:

• Broken skin stings. DermNet warns that urea and other acidic preparations often sting if applied to scratched or fissured skin. Avoid it on cracked, raw or freshly shaved areas.
• Higher strength means more irritation. The 2021 review notes that mild irritation is possible and more common at higher concentrations, and usually temporary.
• Keep high strengths away from the eyes and lips. The label for one 40% urea cream says to avoid contact with eyes, lips or mucous membranes.
• Test first. Try a new urea product on a small area for a few days. Our guide to patch testing skincare shows how.

If your face is very reactive, or you have eczema or rosacea, ask a dermatologist before adding a 10% product to your face.

How do you use 10% to 20% urea for rough skin and keratosis pilaris?

Apply it after bathing to the bumpy or rough areas, once or twice a day, and give it several weeks. The AAD notes that most moisturizing creams used to treat keratosis pilaris contain urea or lactic acid, and its self-care advice is to use a moisturizer that contains urea or lactic acid.

1. Wash with a gentle cleanser. The AAD says to avoid scrubbing your skin, which tends to irritate the skin and worsen keratosis pilaris.
2. Apply within 5 minutes. The AAD recommends moisturizing damp skin within 5 minutes of bathing.
3. Repeat daily. For keratosis pilaris, the AAD suggests applying moisturizer at least 2 or 3 times a day, gently massaging it into the bumps.
4. Give it 4 to 6 weeks. If you see no improvement after following a plan for that long, the AAD says to tell your dermatologist.

Treatment is optional. The AAD says it can help if the itch, dryness, or appearance of bumps bothers you, so the goal of a urea cream is comfort and smoother texture, not a permanent cure.

What is 40% urea cream used for?

Forty percent urea is a treatment for thick, hardened skin and nails, not a moisturizer. In the US, 40% creams are commonly sold under prescription drug labels. One such label describes use for debridement and healing of hyperkeratotic surface lesions, directs users to apply to affected skin twice per day, and notes that the labeling has not been approved by FDA. The 2021 review adds that urea at 40% to 50% has been extensively used for the treatment of nail disorders, including alongside antifungals for fungal nails.

The same label lists side effects of transient stinging, burning, itching or irritation and gives it Pregnancy Category B, to be used in pregnancy only if clearly needed. If you're pregnant or breastfeeding, check with your doctor before using a high-strength urea product. For thick calluses that crack, bleed or hurt, and for any foot problem if you have diabetes, see a doctor or podiatrist rather than treating at home.

Urea vs lactic acid: which should you use?

Both hydrate and exfoliate, and the AAD names both for keratosis pilaris, so the choice often comes down to tolerance and sun exposure. DermNet lists both urea and alpha hydroxy acids such as lactic acid as humectants that are also keratolytic.

The FDA reports that after four weeks of AHA use, volunteers' sensitivity to skin reddening produced by UV increased by 18 percent, and recommends sunscreen while using AHA products and for a week afterward. An industry safety panel cited by the FDA found lactic and glycolic acid products safe at 10 percent or less with a pH of 3.5 or greater. If you want a gentle AHA for the face, our guide to lactic acid for dry skin covers it in depth.

How do you fit urea into a routine?

Use urea as your moisturizer step, after cleansing and any serums, and in the morning follow with sunscreen. A few pairings to keep in mind:

• Face: a low-percentage urea moisturizer in place of your usual cream. While you test it, don't layer it over strong exfoliating acids.
• Body: a 10% lotion daily on dry legs and arms, or a 10% to 20% cream on rough elbows, heels and keratosis pilaris.
• Feet and nails: 40% only on the thick areas, and wash your hands after applying.

If you'd rather keep your face routine simpler, a glycerin-rich moisturizer does much of the same hydrating job; our guide to glycerin in skincare explains why.

How can an app help you check a urea product?

Strength isn't always on the front of the pack, and the rest of the formula matters as much. Pori's ingredient scanner, part of Pro, reads a barcode or a photo of the label and flags each listed ingredient as beneficial, use with caution or avoid for your skin type, using fixed rules over a curated list of about 250 INCI ingredients. The selfie scan's Pores & Texture and Hydration & Moisture scores let you compare your face before and after a few weeks on a new moisturizer.

An app is not a diagnosis, and it can't diagnose keratosis pilaris, eczema, psoriasis or a nail infection. See a dermatologist for rough patches that itch, spread or don't improve, and for any thickened or discolored nails.