Glutathione Injections: The Secret to Radiant Skin? Kosmoderma GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or GHK Cu Peptide We talk a lot about treatment but healing is where the real work happens., After stretch mark revision, treatment is only half the story., Healing is the other half., For stretch mark B12, Biotin, & Glutathione Shot Show Me Younger How GHK Cu Tightens Loose Skin: Evidence & Protocols Glutathione IV IV Therapy Wellness Center in Madison, AL