How much products actually contain
No product states its amount yet.
Of the products containing it, 1 list it before the 1% line and 2 after it (usually 1% or less).
Products using this ingredient
3 of 3 confirmed · likeliest to carry enough first
Definition
Tetrapeptide-21 is the synthetic peptide consisting of glutamic acid, glycine and lysine
Cosmetic roles
Keeps skin in good condition (CosIng catch-all)SKIN CONDITIONING
Safety & regulatory references
Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name テトラペプチド－２１: 本品は、グルタミン酸（＊）、グリシン（＊）及びリシン（＊）から成る合成テトラペプチドである。
Source: JCIA labelling names (Japan)
Names & identifiers
TETRAPEPTIDE-21INCI테트라펩타이드-21Korean label name (MFDS standard)テトラペプチド－２１Japanese labelling name
Related literature
- Elastin-derived peptide hydrogels for sustained dermal delivery of tetrapeptide-21. · 2025
- Synergistic Effects of Injectable Platelet-Rich Fibrin and Bioactive Peptides on Dermal Fibroblast Viability and Extracellular Matrix Gene Expression: An In Vitro Study · 2025
- Dermal peptide delivery using enhancer molecules and colloidal carrier systems. Part III: Tetrapeptide GEKG · 2018