Urea – Urea

What is Urea?

Urea, also known as urea, is a powerful, versatile and scientifically based ingredient widely used in skin care and cosmetics applications. It is a naturally occurring substance in the skin that is part of the Natural Moisturizing Factor (NMF). This NMF keeps the skin hydrated by retaining water and supporting the skin barrier.

In cosmetics, urea is often synthesized and added to creams, lotions, serums and medical skin care for its intensely moisturizing, keratolytic and skin-repairing properties. But urea does not only have benefits for the skin – it also plays an important role in other industries, such as pharmaceuticals, agriculture and plastics production.

The Effects and Benefits of Urea in Skin Care

Deep Hydration

Urea is a powerful humectant. This means that it attracts and retains water in the skin, reducing dryness and flakiness. This keeps skin soft, supple and hydrated even in the most extreme weather conditions.

Improves the Skin Barrier

A healthy skin barrier is crucial to retain moisture and ward off harmful external influences. Urea strengthens the lipid barrier, helps reduce moisture loss (TEWL – Transepidermal Water Loss) and protects the skin from drying out.

Exfoliates and Removes Dead Skin Cells

At higher concentrations (from 10% urea), it has a keratolytic effect, meaning it helps dissolve and remove dead skin cells. This makes urea ideal for the treatment of flaky, rough or extremely dry skin, as in conditions such as eczema, psoriasis and keratosis pilaris (red bumps on the upper arms).

Softens Calluses and Hard Skin

Thanks to its exfoliating properties, urea is often used in products for the feet and hands, where it helps soften calluses and fissures. Regular use of a urea cream can keep feet smooth and healthy.

Soothes and Restores Sensitive Skin

Urea has an itching and anti-inflammatory effect, making it ideal for people with sensitive skin, eczema or red, irritated skin. By intensively moisturizing and protecting the skin, it helps reduce redness and discomfort.

How to Use Urea in DIY Cosmetics?

Want to incorporate urea into your DIY skin care products yourself? Here are some guidelines:

• For mild hydration: Use 2-5% urea in creams and lotions.
• For deep hydration and exfoliation: Use 10-20% urea, especially in products for rough skin.
• Dissolving: Urea is water soluble and can be added to the water portion of a formula. It works best at a pH between 5.5 and 6.5.

Tip: Combine urea with other moisturizing ingredients such as glycerin, hyaluronic acid and panthenol for an even more intense effect.

Applications of Urea in Skin Care

Urea is widely used in various cosmetic and dermatological formulations. Some popular uses include:

• Facial Creams & Serums: Hydrates and softens skin, reduces dryness and fine lines.
• Hand and Foot Creams: Ideal for rough skin, cracks and calluses.
• Bodylotions: suitable for dry and itchy skin, especially in winter.
• Medical Ointments: Used in dermatological treatments for eczema, psoriasis and extremely dry skin.
• Exfoliating Creams: At higher concentrations (10-20%), urea helps remove dead skin cells.