Ingredient

Evidence reviewedNovember 13, 2026

Medical reviewDr. Abdurrahman Efem

Practical reviewMerve Akkaya

Urea in skincare: hydrator and skin softener

Urea is a natural part of your skin’s own moisturizing system. At low strengths it pulls water into skin and supports the barrier; at higher strengths it also loosens thick, rough skin. The percentage on the label tells you which job it is doing.

Natural moisturizing factorHydrates at 2% to 10%Softens rough skin at 10% and up

TypeHumectant and keratolytic

Common strengths5%, 10%, 20%, 40%

Best forDry, rough, scaly skin

Main side effectMild stinging

The short answer

Urea is a humectant and gentle exfoliant that is naturally present in skin. A 2021 dermatology review describes 2% to 10% urea as hydrating and barrier-supporting, 10% to 30% as moisturizing plus keratolytic (it softens and loosens built-up skin), and 30% to 50% as strongly keratolytic for thick skin and nails. That makes low-strength urea a good daily moisturizer ingredient and higher strengths useful for keratosis pilaris, rough heels and scaly patches. The main side effect is mild, short-lived stinging, mostly at higher strengths or on cracked skin.

Key takeaways

The percentage matters: low strengths hydrate, higher strengths also break down rough, thick skin.
Urea has good evidence in dry skin, eczema-prone skin, ichthyosis and psoriasis, and the AAD lists it for keratosis pilaris.
It can sting on broken skin; keep high strengths off the face unless a clinician advises them.

What it is

What is urea in skincare?

Urea is a small, water-loving molecule that the outer layer of skin uses to hold onto moisture. It is one of the components of the natural moisturizing factor, the blend of substances that keeps the outer skin layer soft and flexible. Skincare urea is made in a lab and is not taken from animals or urine.

DermNet explains that urea attracts and holds water, softens the horny outer layer, soothes itch and may help other treatments, such as corticosteroid creams, absorb better. Products range from about 3% to 40%, and very high strengths are sometimes prescription-only depending on country.

If you mainly want a quick yes-or-no on whether urea belongs in your routine, see should you use urea? This page is the full reference.

What it does

What does urea do for skin, by strength?

Strength	Main action	Typical uses	Evidence strength
2% to 10%	Hydrates, reduces water loss, supports barrier proteins	Face and body moisturizers, eczema-prone and dry skin, ichthyosis	Good: several controlled trials
10% to 30%	Moisturizes and loosens built-up skin	Rough body skin, keratosis pilaris, dry feet, scaly patches	Good for dry, rough skin; KP use is supported by AAD guidance
30% to 50%	Strongly keratolytic; softens thick skin and nails	Calluses, thick plaques, nail softening	Moderate; often used with medical treatment

The 2021 review by Piquero-Casals and colleagues in Dermatology and Therapy summarizes trials across several conditions:

Dry skin: 10% is the most common strength; in one comparison on diabetic feet, 25% urea outperformed 10%.
Eczema-prone skin: strengths of 4% to 20% are typical. One trial found 4% urea reduced water loss more than 20% glycerin, and a 5% cream lowered the risk of flares returning.
Psoriasis: 40% to 50% for thick, localized plaques, and lower strengths to help prescription creams work better.
Nails: 40% to 50% softens the nail plate and helps antifungal treatments penetrate.

Urea also increases barrier proteins such as filaggrin and supports the skin’s own antimicrobial defenses, which may partly explain its benefit in eczema-prone skin. If water loss is your main issue, read our skin barrier guide.

How to use

How to use urea cream

Choose the strength for the area
For the face, stay around 5% or lower unless a clinician advises more. For arms and legs, 10% is a common starting point. For heels and calluses, 20% to 40% is typical.
Apply after bathing
Pat skin almost dry and apply within a few minutes. For keratosis pilaris, the AAD advises moisturizing within 5 minutes of bathing and at least two or three times a day.
Start once daily on rough areas
Higher strengths can sting; build up to twice daily if comfortable.
Avoid broken skin and eyes
DermNet advises against using urea on broken, infected or oozing skin and near the eyes.
Maintain once smoother
When rough skin improves, a lower strength or less frequent use is often enough. The AAD notes keratosis pilaris care often drops to a few times a week once skin clears.

For rough, bumpy arms: our keratosis pilaris page, linked above, covers the full plan. For general flaking, see dry, flaky skin and our dry skin routine.

Pairing

Can I use urea with other ingredients?

Works well with

Ceramides and cholesterol, to rebuild barrier lipids.
Glycerin and hyaluronic acid, other humectants that add water.
Petrolatum or dimethicone on top, to seal moisture in.
Prescription creams, if your clinician recommends it, since urea can help them absorb.

Be careful with

Other exfoliants such as lactic acid, salicylic acid or glycolic acid in the same area, especially at high urea strengths.
Retinoids on the same night if your skin is sensitive.
Scrubs and loofahs, which the AAD says can worsen keratosis pilaris.
Freshly shaved or waxed skin.

Urea and lactic acid are often combined in body lotions for rough skin, and the AAD lists both as options for keratosis pilaris. If you use both, start with one and add the other once your skin tolerates it. For a humectant comparison, see hyaluronic acid vs glycerin.

Side effects

Urea side effects and who should avoid it

Urea is generally well tolerated. DermNet lists mild stinging, itching or rash as the usual side effects, and the 2021 review describes irritation as mild, temporary and more frequent at higher strengths. Some urea creams have a faint smell when first applied that fades quickly. True allergy to urea itself appears to be very rare.

Situation	Advice
Cracked, raw or broken skin	Avoid or use a low strength; urea can sting on open skin.
Infected or oozing skin	Do not apply; see a doctor.
Babies and young children	DermNet notes low strengths may be used from age 3 for dry skin, and from age 1 only on a doctor’s advice.
Facial skin	Use low strengths; high strengths are for body, feet and nails.
Pregnancy and breastfeeding	Urea is not on the usual avoid lists, but confirm your routine with your clinician.

Safety and professional-help boundaries

When rough or dry skin needs a doctor.

Thick, scaly, itchy patches may be psoriasis or eczema, which a dermatologist may treat with prescription creams alongside urea.
Do not use urea on infected, oozing or broken skin; see a doctor instead.
If you have diabetes and dry, cracked feet, ask your doctor or a podiatrist before using high-strength urea, and get any sores checked promptly.
Thickened, discolored nails may be a fungal infection that needs proper diagnosis.
Pregnant or breastfeeding: urea is not on the usual avoid lists, but check our guide to skincare during pregnancy and confirm with your prenatal clinician.

Frequently asked questions

Short answers to common questions

What does urea do in skincare?

Urea draws water into the outer layer of skin and helps it hold that water, which softens and smooths dry skin. At higher strengths it also loosens built-up dead skin, making it useful for rough patches, calluses and keratosis pilaris.

What percentage of urea should I use?

For daily moisturizing, especially on the face, 2% to 10% is typical. For rough body skin or keratosis pilaris, around 10% to 20% is common, and 20% to 40% is used for heels, calluses and nails.

Is urea good for keratosis pilaris?

Yes. The American Academy of Dermatology lists urea among the ingredients that help loosen the plugs in keratosis pilaris, and recommends moisturizers containing it to help prevent flares.

Can I use urea on my face?

Yes, at low strengths such as 5% or less, which hydrate without much exfoliation. Keep higher strengths for the body unless a dermatologist advises otherwise.

Is urea safe for sensitive skin?

Low-strength urea is usually well tolerated and is common in eczema-prone skin care. It can sting on cracked or very irritated skin, so patch test first.

Does urea come from urine?

No. The urea in skincare is made synthetically in a lab. It is chemically the same as the urea found naturally in skin.

Can I use urea with retinol?

Yes, many people do, but if your skin is sensitive use them on different nights or keep urea at a low strength. Both can cause stinging on irritated skin.

How long does urea take to work?

Skin often feels softer within days of regular use. Rough or bumpy areas such as keratosis pilaris usually need several weeks of consistent daily use to look smoother.

Is urea or lactic acid better for rough skin?

Both help and are often combined. Urea is more hydrating and tends to sting less, while lactic acid exfoliates more actively; start with one and add the other if needed.

Is urea safe during pregnancy?

Urea is not on the usual lists of ingredients to avoid in pregnancy, and it is widely used in moisturizers. As with any change in pregnancy, check your routine with your prenatal clinician.

Editorial Record

Editorial status: reviewed
Medical reviewer: Dr. Abdurrahman Efem
Practical reviewer: Merve Akkaya
Last reviewed: November 13, 2026

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Sources reviewed

Evidence behind this page

Sources support the general editorial guidance shown here. They do not replace personal medical advice from a qualified clinician.