When I started, all I had was Reta and electrolytes in my fridge. Now I've added Tesa, MOTS C, GHK Cu, kimchi and I've upgraded to reusable pens. : r Retatrutide How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin Retatrutide Peptides Weight Loss Solution 2025 Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry GHK cu Copper Peptide: The "Glow" for Hair & Skin Seenergie PH