Is Urea safe during pregnancy?

Below about 10% it behaves as a humectant, drawing water into skin as part of the natural moisturising factor.

Above roughly 10% it becomes keratolytic, breaking down hardened keratin — which is why 20–40% products exist for feet, elbows and keratosis pilaris.

Typical use on shelf: 5%–10% for face and body hydration; 20%–40% for callus and KP treatment..

• High-strength urea stings on broken or freshly shaved skin.
• Facial use is usually limited to 5–10%.

One ingredient rarely decides anything. Paste the full list from each product you use into the pregnancy ingredient checker and take the flags to your clinician. The full write-up on Urea — what it does, irritation, pore-clogging risk — is on the Urea explainer.