What is the purpose of urea in this soap, and how does it help with dryness?

Urea is a humectant, meaning it helps bind water to the stratum corneum, the skin's outermost protective layer. In this soap, the 3% urea works during the cleansing process itself. It helps make the washing experience feel less stripping, so your skin is more likely to retain its natural moisture and feel soft and flexible immediately after rinsing, rather than tight and rough. This differs from a heavy cream or occlusive film applied after washing. It's a gentler approach to cleansing for skin that is already dry or easily irritated, supporting the skin's own moisture-binding system.

For best results, use lukewarm water, not hot, and gently pat your skin dry instead of rubbing. After washing, while your skin is still slightly damp, you can follow up with your regular moisturizer if needed, as this can help lock in the hydration from the washing process. The soap's light, clean scent is designed to rinse away without leaving a strong perfume residue, which can be preferable for sensitive skin.