CeramidesvsSnail Mucin

Ceramides are sphingolipids comprising a sphingoid base (sphingosine or phytosphingosine) amide-linked to a fatty acid—comprising ~50% of stratum corneum lipids. They integrate into the intercellular lipid matrix between corneocytes, forming the lamellar bilayer structure with cholesterol and free fatty acids that limits transepidermal water loss (TEWL). Optimal molar ratio is ~3:1:1 (ceramides:cholesterol:fatty acids). Topical ceramides (NP/3, AP/6-II, EOP/1) fill gaps from barrier damage by surfactants, retinoids, or inflammation. Cholesterol enables lamellar phase formation; fatty acids provide acidic pH for ceramide packing. Products restoring the complete ratio upregulate barrier repair genes (involucrin, filaggrin, transglutaminase) more effectively. Synthesis occurs via serine palmitoyltransferase and ceramide synthase in keratinocytes.

Snail secretion filtrate (Cryptomphalus aspersa) is a complex mixture of bioactive compounds. Hyaluronic acid (multiple molecular weights) provides humectant hydration by binding water in the stratum corneum and dermis. Glycoproteins and proteoglycans contain growth factors and enzymes that accelerate wound healing, promote fibroblast and keratinocyte proliferation, and support extracellular matrix remodeling. Copper peptides (e.g., GHK-Cu) naturally present stimulate collagen and elastin production via upregulation of collagen genes and inhibition of MMPs; they also have antioxidant and anti-inflammatory activity. Antimicrobial peptides (e.g., defensin-like molecules) provide mild protection against bacteria. Allantoin soothes, promotes cell turnover, and supports barrier repair. The secretion also contains glycolic acid (mild exfoliation), vitamins, and trace minerals. The combination replicates functions of multiple skincare ingredients—hydration, wound healing, antioxidant defense, and barrier support—in a single biocompatible secretion. Filtrate processing removes snail cells while preserving bioactive compounds.