Dry, rough or uneven skin can be really frustrating to deal with, especially when even the fancy moisturisers do not seem to do enough. Sometimes you need to get back to basics. If you have been searching for an ingredient that deeply hydrates whilst also smoothing skin, urea might just be it. An oldie but a goodie, urea has a long history of use in dermatology. It is a massively underrated ingredient that both moisturises and gently exfoliates. Whilst it is not fashionable, look up almost any long-standing cream for stubborn dryness or rough patches and you will find urea. In this article we take a deep dive into the skin benefits of urea and the best way to use it.
What is Urea?
Urea might not be the first skincare ingredient that comes to mind, but it has been a hero in dermatology for centuries. Whilst today’s urea is synthetically produced for consistency and safety, its origins trace back to natural sources. Historically, urea came from urine and animal waste, which are rich in nitrogenous compounds. In fact, ancient civilisations including the Egyptians, Romans and Chinese used urine in medicinal treatments and skincare rituals, thanks to its ability to soften and heal the skin.
The true value of urea only became apparent in the 18th century, when it became the first organic compound to be synthesised in a lab by German chemist Friedrich Wöhler in 1828. This breakthrough removed the need for natural sources whilst making the ingredient more accessible. Today we also know that urea is an important component of the skin’s Natural Moisturising Factor (NMF). This is a group of naturally existing molecules that work together to keep skin hydrated, smooth and resilient. As part of the NMF, urea plays a vital role in moisture balance, barrier function and overall skin health.
Thanks to its dual action, urea became a staple in skincare. It works as a humectant by drawing moisture into the skin. It is also a keratolytic agent that gently softens and exfoliates rough or flaky patches. This makes it especially effective for conditions like eczema, psoriasis and keratosis pilaris, and for tackling cracked heels and calluses.
What are the Benefits of Urea for Skin?
Urea is a multitasking ingredient that is also found naturally in the skin. It works deep within the skin’s layers through two key actions. First, it is a powerful humectant that attracts and holds water. Second, it has keratolytic properties, so it dissolves the bonds between dead skin cells to boost cell turnover. The key benefits of urea include:
- Deep Hydration: Urea provides intense hydration because it penetrates deeply and binds moisture. This improves the skin’s ability to hold water for long-lasting hydration, which makes it useful for anyone struggling with chronic dry, dehydrated or flaky skin.
- Gentle Exfoliation: One of urea’s unique benefits is that it hydrates and exfoliates at the same time. It gently dissolves keratin bonds, which helps the skin shed dead cells naturally. That makes it particularly effective for smoothing rough patches on the elbows, knees and feet without causing irritation.
- Skin Barrier Support: A healthy skin barrier is crucial for keeping moisture in and irritants out. Urea supports the barrier by improving lipid production and reducing transepidermal water loss, so with regular use the skin becomes more resilient.
- Tackles Chronic Skin Conditions: Urea is a common ingredient for managing chronic conditions where dryness is a problem. It relieves itching and dryness in eczema, reduces scaling in psoriasis, and softens the tiny bumps of keratosis pilaris on the arms and thighs. It also helps soften thickened skin in creams for cracked heels and calluses.
- Improves Texture and Dullness: Regular use can make skin softer and smoother. It is also effective at reducing the look of dull skin and fine lines by improving hydration and cell turnover.
How Do You Use Urea in Your Skincare Routine?
The great thing about urea is that it is available in plenty of products. However, since it is not a trendy ingredient, you may need to search a little, as it is often not marketed prominently. The easiest way to find it is to look for creams for chapped, cracked, rough or bumpy skin, then check the label. For the face or sensitive skin, look in the dry or eczema-prone moisturiser section. Here are our top tips for getting the most out of urea:
- Choose the Right Concentration: Urea comes in a range of strengths. Lower concentrations of 5 to 10% are ideal for daily hydration and mild dryness, especially on the face and sensitive skin. Moderate concentrations of 10 to 20% suit rough patches, keratosis pilaris and moderate dryness. Higher concentrations of 20 to 40% are reserved for severely dry, callused or thickened skin, and are best used selectively on problem areas rather than all over the body.
- Apply to Damp Skin: For maximum absorption, apply urea products to clean, slightly damp skin. This locks in moisture and enhances its ability to hydrate deeply. The best time is straight after showering or cleansing.
- Pair with Complementary Ingredients: Urea works best alongside other moisturising and soothing ingredients. Ceramides help strengthen the barrier and lock in moisture. Glycerin and hyaluronic acid boost hydration by drawing water into the skin. For sensitive or irritated skin, aloe vera and niacinamide add calming, anti-inflammatory benefits that reduce redness.
- Always Use Sunscreen: Since urea promotes gentle exfoliation, it can make your skin more sensitive to UV. Always use a broad-spectrum sunscreen of SPF 30 or higher, especially if you use urea on your face or other sun-exposed areas.
Is Urea Safe?
Most people tolerate urea well, but as with any active there is a risk of irritation or an allergic reaction. Before starting, keep the following in mind:
- Patch Test First: Apply a small amount to a discreet area and wait 24 hours to check for any irritation or sensitivity.
- Avoid Broken Skin: Urea is great for softening rough patches, but higher concentrations can sting on open wounds, severely cracked skin or cuts. If your skin is broken, check with a doctor or pharmacist first.
- Start with a Lower Concentration: If you are new to urea, want to use it on the face, or have sensitive skin, begin with a lower concentration of 5 to 10%. Use higher concentrations of 20% and above sparingly and only on targeted areas, never on the face or sensitive skin.
Urea is the real deal. A rare skincare ingredient, urea cream delivers multiple actions and has decades of research behind its many uses. Its main benefits are that it hydrates, exfoliates and supports skin health. There are a few tips and tricks to keep in mind, but as always, patience and consistency are the key to getting the benefits of urea for your skin.
At City Skin Clinic, we are passionate about personalised skincare. Our online skin clinic offers safe and effective custom skincare treatments. Where appropriate our doctors use ingredients such as tretinoin and hydroquinone to treat skin conditions like acne, hyperpigmentation, melasma and skin ageing. To start your personalised skincare plan, book a virtual video consultation or use our online consultation form. The journey towards great skin starts here.
This article is intended for general informational purposes only and is not a substitute for medical advice, diagnosis or treatment. Always consult a qualified medical provider for any medical concerns or questions you might have.
