Is Urea in Creams Safe, and Who Is It For?
Is urea in creams safe? See how it works at different concentrations, who benefits most from it and when it pays to take care.
What is urea in cosmetics?
Urea (INCI: Urea) is an organic compound — the amide of carbonic acid — naturally present in the skin as part of the NMF (Natural Moisturizing Factor). In healthy skin, urea makes up a few percent of the NMF and is responsible for keeping the epidermis hydrated and for the proper shedding of dead cells.
Urea has been used in cosmetics and pharmaceuticals for over 100 years. Understanding how it works, however, means taking concentration into account — because that is what determines both the effect and the safety profile.
How does urea work at different concentrations?
Urea acts through different mechanisms depending on its concentration:
- 2–10% — moisturising action (humectant): At low concentrations, urea binds water in the epidermis, improves elasticity and reduces transepidermal water loss (TEWL). Excellent for the everyday care of dry and atopic skin.
- 10–30% — keratolytic action: Higher concentrations break the bonds between keratinocytes (exfoliation), helping to remove thickened skin, calluses and hyperkeratosis. Typical of foot creams and corn treatments.
- Above 30% — proteolytic action: Used only in pharmaceutical preparations under specialist supervision to treat psoriasis, ichthyosis and other keratinisation disorders.
Looking for foot creams with urea? Browse our foot creams category, where you can compare the urea concentration and ingredient score of each product.
Is urea safe? What does EU regulation say?
Urea is a cosmetic ingredient permitted without concentration limits under EU Regulation 1223/2009 (it does not appear in Annex II as a banned substance, nor in Annex III as a restricted one). The SCCS committee has not issued any negative opinions on the safety of urea applied topically at typical cosmetic concentrations.
It is listed in the CosIng database (the European Commission's Cosmetic Ingredient database) as an ingredient with the functions of humectant, keratolytic and water-binding agent — with no special warnings.
Who benefits most from urea?
Urea is not uniformly beneficial for everyone — certain groups of people gain exceptional benefits from it:
- Atopic dermatitis (AD): Atopic skin is characterised by reduced levels of natural urea, an impaired skin barrier and chronic dryness. Creams with 5–10% urea are recommended by European dermatological societies (EDF) as basic therapy.
- Psoriasis and keratolytic conditions: Higher concentrations (20–40%) help to soften and remove scales, often as an adjunct to dermatological treatment.
- Feet with thickened skin and calluses: Creams with 20–40% urea are the standard preparation for softening hardened foot skin.
- Dry and rough body skin: Emulsions with 5–10% urea provide excellent hydration without a greasy feel.
- Diabetes: The feet of people with diabetes need intensive care — urea is one of the recommended ingredients.
You'll find more information about ingredients for dry and atopic skin in our ingredient encyclopedia.
When should you take care with urea?
Urea is safe for the vast majority of users, but there are situations that call for caution:
- Irritated or damaged skin: High concentrations (above 20%) can sting on open wounds.
- Infants: Newborn skin has a different barrier — do not use creams with a high urea concentration without consulting a paediatrician.
- Pregnancy: Urea applied topically at typical cosmetic concentrations (up to 10%) is considered safe. For preparations with higher, pharmaceutical concentrations — consult your doctor.
- Contact allergy: Rare, but possible. On first use, patch-test on a small area of skin.
How to use a urea cream correctly?
- Apply after a bath or wash — damp skin absorbs urea better.
- On the feet, apply the cream and put on cotton socks overnight — the occlusion effect boosts the keratolytic action.
- Avoid direct contact with mucous membranes and the eye area.
- At higher concentrations (20%+), apply only to hardened, calloused areas.
Check the ingredients of your cream and compare products in our PurScore.pl cosmetics search.
Note: This article is for informational purposes and does not replace medical or dermatological advice. For skin conditions, consult a dermatologist.
FAQ
Yes. Creams with 5–10% urea are recommended by European dermatological societies as a core part of caring for atopic skin. They replenish the deficit of natural urea and strengthen the skin barrier.
For thickened skin and calluses, creams with 20–40% urea work best. For everyday care, 10–15% is enough. Concentrations above 40% are pharmaceutical preparations used under specialist supervision.
Urea at typical cosmetic concentrations (up to 10%) applied topically is considered safe during pregnancy. Preparations with higher, pharmaceutical concentrations should be discussed with your doctor.
A contact allergy to urea is possible but rare. A far more common cause of irritation is too high a concentration applied to irritated or damaged skin. On first use, it's worth patch-testing the product on a small area.
Check products
Looking for cosmetics related to this topic? Compare ingredients and prices on PurScore.