Glycoproteins are proteins featuring attached carbohydrate molecules known as glycans. They serve vital functions in the body, including cell signalling, immune response, and cell adhesion. In skincare, glycoproteins find application for their capacity to moisturise and condition, thus improving skin hydration and texture. These ingredients are commonly found in products aimed at enhancing skin health and appearance. By deeply hydrating the skin and preserving its moisture balance, glycoproteins effectively combat trans-epidermal water loss (TEWL).