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Ceramides

Description

Ceramides are essential lipid molecules that play a crucial role in maintaining the skin's barrier function and overall health. These naturally occurring compounds make up approximately 50% of the skin's outer layer, acting as the "mortar" between skin cells to create a protective barrier against environmental stressors and moisture loss.

Structurally, ceramides are composed of a fatty acid chain linked to a sphingoid base. There are several types of ceramides found in human skin, each with slightly different molecular structures and functions. They work synergistically to form a water-impermeable barrier, prevent transepidermal water loss, and maintain skin hydration.

As we age or experience skin conditions like eczema and psoriasis, ceramide levels in the skin can decrease, leading to dryness, irritation, and increased sensitivity. Topical application of ceramides in skincare products can help replenish these vital lipids, strengthening the skin barrier and improving moisture retention. Ceramides are particularly beneficial in formulations for dry, sensitive, or compromised skin, as they can help restore barrier function and promote skin healing. They are often combined with other barrier-supporting ingredients like cholesterol and fatty acids for optimal efficacy.