1. A crystalline compound found in the allantoic fluid of mammals and in many plants, used in cosmetics and pharmaceuticals for its skin-healing properties.
Usage: chemistry; biochemistry

Examples

• Allantoin is a common ingredient in moisturizing creams and lotions.
• The compound allantoin promotes wound healing and reduces inflammation.
• Many skincare products contain allantoin to soothe irritated skin.
• Allantoin is naturally present in comfrey plants.
• Dermatologists often recommend products with allantoin for sensitive skin.