What functional property of ceramides contributes to skin health?

Ceramides play a critical role in maintaining skin health primarily through their ability to retain moisture. They are lipid molecules found naturally in the skin and are essential for the formation of the skin barrier. This barrier helps to prevent transepidermal water loss, effectively keeping the skin hydrated and plump. When the skin barrier is compromised, it can lead to dryness, irritation, and various skin conditions. Hence, the moisturizing property of ceramides makes them a key ingredient in many skincare products, as they help to improve skin hydration, overall appearance, and resilience against environmental stressors.