MATERIALS
Dictionary of Torriden
Ceramides are essential components of the skin’s outermost layer, the stratum corneum, which is made up of skin cells and intercellular lipids (ceramides, cholesterol, fatty acids). Ceramides account for about 50% of these lipids and serve as key moisturizers.
If skin cells are like bricks, ceramides act as the “cement” that binds them together, showing why sufficient levels are important for a strong and resilient barrier.
Ceramides are classified into types such as AP, AS, NP, NS, and EOP, and the skin barrier is built from a mix of these.
Their primary role is to strengthen the skin barrier, protect against external stressors, and prevent moisture from escaping by keeping cells tightly connected.
Because ceramide levels naturally decline with age or when the skin is damaged, replenishing them helps maintain hydration, reduce dryness, and support overall barrier health.
FAQ
The main function of ceramides is to help strengthen the skin barrier and protect it from external stressors.
Since a stable level of ceramides is important for maintaining healthy skin, they can be used on all skin types — including dry, sensitive, or easily irritated skin.
However, as individual skin reactions may vary, it is recommended to do a patch test before use.
In addition to ceramides, cholesterol and fatty acids are also major components of the skin’s outer layer.
Using products that combine ceramides with cholesterol and fatty acids helps build a stronger barrier and improves moisture retention.
Panthenol can also be beneficial when used together, supporting long-lasting barrier care.
*This description is provided to help understanding of the general properties of the ingredient.
References: Rogers et al., 1996; Ceramide and Skin Barrier Function, 2005; J Invest Dermatol, 2012; Clinics in Dermatology, 2019
