Understanding Ceramides from the Perspective of the Stratum Corneum Lipid Barrier: Moisturizing and Barrier-Repair Mechanisms, Ingredient Selection, and Formulation Research Considerations

When the skin feels dry, tight, stinging, or red, many people immediately attribute it to “dehydration.” However, in skincare evaluation, the more important question is often not whether water has been temporarily replenished, but whether the stratum corneum can effectively reduce water loss ...