Urea in Skincare

IngredientBrief™

Urea is a well-supported humectant for dry skin that becomes more keratolytic at higher strengths. The right concentration depends on whether you need hydration or targeted smoothing.

Aliases
Carbamide, Carbonyldiamide
Ingredient category
Exfoliant, Humectant
Most relevant for
Dryness, Rough and Bumpy Skin
Evidence strength
Well Supported for Improving hydration in dry skin with leave-on urea moisturizers
Formula matters
Concentration, body area, vehicle, supporting moisturizers, and other exfoliating ingredients determine hydration, smoothing, and irritation; higher strength is more targeted, not automatically better.
Separate product needed?
Sometimes. A dedicated urea product can be useful when rough, scaly, callused, or thickened skin is not improving with a basic moisturizer.

BB takeaway

Urea is a credible moisturizer with concentration-dependent smoothing effects. Choose the strength for the body area and concern rather than the highest percentage.

Ingredient evidence does not prove the performance of every finished product containing it.

What is urea?

Urea is a small water-binding molecule naturally present in the outer layers of skin as part of the natural moisturizing factor, or NMF. In skincare and dermatology products, urea is manufactured rather than collected from biological sources.

It is also known chemically as carbamide or carbonyldiamide.[1]

What makes urea useful is that its role changes with concentration. Lower-strength formulas are used mainly for hydration, while stronger formulas have more keratolytic activity, meaning they help soften and loosen excess surface buildup.

What does urea do for skin?

At moisturizing strengths, urea helps the outer skin layer hold water. That can improve softness, flexibility, and comfort when skin is dry.

At higher strengths, urea also softens compacted surface keratin. That makes it useful for rough, flaky, scaly, callused, or thickened areas such as the feet, hands, elbows, and knees.

Urea can be part of a barrier-supporting moisturizer, but it is not a complete barrier treatment by itself. The product base, concentration, supporting ingredients, and reason for the dryness still matter.

What the evidence says about urea skincare

Urea is well supported as a moisturizing ingredient for dry skin.

A 2025 systematic review evaluated 31 in-vivo studies across xerosis, atopic dermatitis, psoriasis, ichthyosis, and other dry or scaly skin conditions. The included studies generally reported improvements in dryness, scaling, erythema, and transepidermal water loss with urea-containing treatments.[2]

The review also shows why you should not treat urea as one standardized treatment. Concentrations, vehicles, comparators, schedules, and medical populations varied widely, and urea was often used as part of a complete formula rather than in isolation.

A 2026 prospective study of a 10% urea lotion in adults with xerosis reported higher hydration and elasticity and less scaling and itching over 60 days.[3] The study had no control group, tested a complete lotion containing Prolom thermal water, and was financially supported by that water’s manufacturer, so it does not establish that urea alone caused the results.

Clinical reviews also support a concentration-dependent shift from primarily moisturizing use at lower strengths toward more keratolytic use as concentration rises.[4]

For you, the strongest conclusion is straightforward: urea is a credible moisturizer for dry skin, and stronger formulas can be useful when dryness also comes with rough or thickened surface buildup.

How urea form and formulation affect results

Concentration matters with urea, but the percentage is a guide rather than a quality score.

Dermatology reviews commonly describe lower concentrations, roughly 2% to 10%, as primarily moisturizing; intermediate strengths around 10% to 30% add progressively more keratolytic activity; and higher strengths are used more selectively for thickened or callused skin.[4]

Those ranges are useful context, not universal shopping rules. A 10% face cream, 20% body lotion, and 40% foot cream serve different purposes and should not be ranked simply by percentage.

The base matters too. A urea cream containing glycerin, emollients, silicones, oils, or petrolatum may feel and perform very differently from a lighter lotion with the same headline strength.

Combination formulas also need context. Urea paired with lactic acid, salicylic acid, or another exfoliating ingredient may smooth rough skin more aggressively but may also sting more.

Who may benefit from urea skincare?

Urea can be especially useful when dryness comes with roughness, flaking, scaling, or thickened texture.

Common use cases include dry hands, flaky legs, rough elbows and knees, cracked-feeling heels, callused areas, and body skin that stays textured despite regular moisturizer.

Lower-strength facial or body formulas can also make sense when you want hydration plus mild smoothing and your skin tolerates them well.

You may not need urea if a basic moisturizer already controls your dryness. If you have an active inflammatory skin condition, infected skin, a painful fissure, or another persistent problem, do not use a stronger urea product as a substitute for appropriate medical care.

Urea side effects and irritation risk

Topical urea is generally well tolerated, but stinging, burning, itching, or irritation can occur. Side effects are more common as concentration rises.[4]

Cracked, inflamed, freshly shaved, or otherwise irritated skin may sting more.

Do not interpret stinging as proof that the product is working better. A strength that repeatedly burns is usually a poor match for that area.

Products that combine urea with exfoliating acids can be harder to tolerate, especially when the same area is also treated with a retinoid or another irritating active.

Stop using a product that causes significant or persistent burning, swelling, blistering, severe itching, or a worsening rash.

How to use urea in your skincare routine

Use the product according to its strength, format, and labeled body area.

A lower-strength face moisturizer can simply serve as your moisturizing step. A stronger hand, foot, callus, or body treatment should stay on the areas named in its directions.

Do not move a 30% or 40% foot cream to your face because the ingredient name is the same.

If you are introducing a stronger formula, start at the directed frequency and watch for irritation. Avoid stacking several strong keratolytic treatments on the same area without a clear reason.

How long does urea take to work?

A moisturizing urea formula can make skin feel softer within the first few applications, although that immediate comfort comes from the complete formula.

More noticeable changes in scaling, roughness, or thickened skin generally require repeated use over days or weeks.

In the 2026 xerosis study, measurements were taken at days 14, 30, and 60, with progressive improvement during the study period.[3]

That timeline belongs to one 10% lotion and should not be treated as a promise for every urea product.

What can you use with urea?

Urea fits well with ordinary moisturizing ingredients such as glycerin, hyaluronic acid, ceramides, squalane, dimethicone, cholesterol, fatty acids, and petrolatum.

Those ingredients do different jobs: some attract water, some soften the surface, and some reduce moisture loss. A complete formula can therefore be more useful than urea alone.

Use more caution when urea is paired with salicylic acid, lactic acid, glycolic acid, retinoids, scrubs, or other strong exfoliating treatments. They are not automatically incompatible, but the combined irritation burden can become unnecessary.

How to choose a urea product

Start with the body area and the problem you are trying to solve.

For routine dryness, a lower-strength moisturizer is usually enough. For persistent rough hands, heels, elbows, knees, or scaly body skin, a stronger formula may be more appropriate. Reserve very high strengths for clearly targeted thickened or callused areas.

If the percentage is disclosed, use it as a clue rather than a score. Also check the product format, directions, other exfoliating ingredients, moisturizing support, fragrance, and whether it is intended for the area where you plan to use it.

Be cautious with claims that a high urea percentage “repairs the barrier,” treats eczema, fixes cracked feet overnight, or is automatically better because it is stronger.

Urea alone does not justify Premium or Luxury pricing. Pay more only when the complete product gives you a meaningful advantage in texture, tolerability, packaging, directions, or credible finished-product testing.

Do you need a separate urea product?

Sometimes.

You probably do not need one when mild dryness already responds to your regular moisturizer.

A dedicated urea product becomes more useful when persistent roughness, scaling, calluses, or thickened body skin is not improving with a basic moisturizer.

Choose one strength and format that solves the actual problem rather than collecting several urea products for different percentages.

The BB Perspective

Urea is useful because it can do two related jobs: hydrate dry skin and, at higher strengths, soften rough surface buildup.

The percentage matters more here than it does for many cosmetic ingredients, but stronger still does not mean better. High-strength products are more targeted and more likely to sting.

Choose urea by concern and body area. If ordinary moisturizer already controls your dryness, you do not need it; if dryness comes with stubborn roughness or thickened skin, the right urea formula can fill a real gap.

Last reviewed: September 2026

Sources

  1. National Library of Medicine PubChem. Urea.

    PubChem identifies urea and lists recognized synonyms including carbamide and carbonyldiamide. This source supports ingredient identity rather than topical efficacy. Return to citation.

  2. Jawed I, Abdul Qadir MU, Farwa UE, et al. Effect of topical treatment with urea in ichthyosis, atopic dermatitis, psoriasis, and other skin conditions: a systematic review. Annals of Medicine & Surgery. 2025;87(1):276-284. doi:10.1097/MS9.0000000000002797. PMID: 40109645. PMCID: PMC11918770.

    This systematic review included 31 in-vivo studies using urea alone or in combination across xerosis, atopic dermatitis, psoriasis, ichthyosis, and other conditions. The studies generally reported improvements in dryness, scaling, erythema, and transepidermal water loss, but strengths, formulas, populations, and comparators varied substantially. It supports urea as a useful moisturizing and keratolytic ingredient without establishing one ideal concentration or universal superiority over other treatments. The authors reported no conflicts of interest. Return to citation.

  3. Maletin N, Spasić B, Golušin Z, et al. Evaluation of a 10% Urea Lotion for Xerosis: Clinical and Patient-Reported Outcomes From a Prospective Study. Journal of Cosmetic Dermatology. 2026;25(3):e70801. doi:10.1111/jocd.70801. PMID: 41807289. PMCID: PMC12975674.

    This prospective single-arm study tested a 10% urea lotion with Prolom thermal water for 60 days in adults with xerosis and reported improvements in hydration, elasticity, scaling, redness, itching, and quality of life. There was no control group, the formula contained ingredients beyond urea, and the study was financially supported by Planinka d.o.o. Prolom Banja, which also covered publication costs; the sponsor reported no role in study design, data collection, analysis, interpretation, or manuscript preparation. It supports the tested finished lotion rather than isolated urea or superiority over other moisturizers. Return to citation.

  4. Piquero-Casals J, Morgado-Carrasco D, Granger C, Trullàs C, Jesús-Silva A, Krutmann J. Urea in Dermatology: A Review of its Emollient, Moisturizing, Keratolytic, Skin Barrier Enhancing and Antimicrobial Properties. Dermatology and Therapy. 2021;11(6):1905-1915. doi:10.1007/s13555-021-00611-y. PMID: 34596890. PMCID: PMC8611129.

    This review summarizes the moisturizing and keratolytic uses of topical urea and describes lower concentrations as primarily moisturizing, intermediate concentrations as moisturizing and keratolytic, and high concentrations as strongly keratolytic. ISDIN funded the journal’s Rapid Service Fee. Corinne Granger and Carles Trullàs were ISDIN employees, while Jaime Piquero-Casals, Daniel Morgado-Carrasco, and Jean Krutmann disclosed consulting fees from the company. The concentration ranges are useful clinical guidance rather than a rule that higher percentages are better. Return to citation.

Products featuring Urea

These evaluated products list Urea among the Key Ingredients that meaningfully shape the formula. Inclusion here reflects ingredient relevance, not an endorsement or rating.