Glycerin,Phenoxyethanol,Caprylyl Glycol,Ethylhexylglycerin,Pentylene Glycol,Ethoxydiglycol,Acetyl Tetrapeptide-2,Dextran,Leuconostoc/Radish Root Ferment Filtrate,Tripeptide-1,Dimethyl Isosorbide,Copper Gluconate,Isoceteth-20,Propanediol,Glycogen,TRIPEPTIDE-29,Sodium Hyaluronate Crosspolymer,Trifluoroacetyl Tripeptide-2,Myristoyl Nonapeptide-3,ACTIVATOR- Aqua (Water),Chlorphenesin. COPPER CONCENTRATE - Aqua (Water),Chlorphenesin. Note: The Activator contains 2% pure GHK (Tripeptide-1). The Serum bottle,before mixing,contains Copper Gluconate. Once mixed,1% GHK is left in free form,while 1% binds to the Copper Gluconate to form 1% Copper Tripeptide-1 (known as GHK-Cu or Copper Peptides). The "2:1" reference in the name of this product reflects the 2-to-1 ratio of GHK to GHK-Cu.