Your skin barrier is made up of skin cells (corneocytes) held together by lipids (fats that form a mortar-like matrix). Ceramides make up roughly 50% of that lipid matrix. When they're depleted, the barrier becomes porous: moisture escapes and irritants enter.
Which Ceramides to Look For
There are 12 identified ceramide species in skin. Products containing ceramide NP, AP, and EOP, ideally alongside cholesterol and fatty acids, are most effective at replicating the skin's natural lipid composition. The ratio matters too: roughly 3:1:1 (ceramides to cholesterol to fatty acids) is considered optimal.
“A ceramide-rich moisturiser isn't a luxury. For compromised or reactive skin, it's often the essential first step in any recovery protocol.”
When to Use Them
Ceramide-containing products are particularly valuable during and after periods of active treatment, particularly when using retinoids, acids, or prescription acne medications that compromise the barrier. They're also essential for anyone with eczema, rosacea, or chronically sensitised skin.
