LINK TO FULL ARTICLE:  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073405/#sec1-ijms-19-01987title

​The human copper-binding peptide GHK-Cu (glycyl-l-histidyl-l-lysine) is a small, naturally occurring tri-peptide present in human plasma that also can be released from tissues in case of an injury. Since its discovery in 1973, GHK-Cu established itself as a powerful protective and regenerative ingredient, which is currently widely used in skin and hair products [1].
Up-to-date, it is established that GHK-Cu is able to:

• -Tighten loose skin and reverse thinning of aged skin
  
• -Repair protective skin barrier proteins
  
• -Improve skin firmness, elasticity, and clarity
  
• -Reduce fine lines, depth of wrinkles, and improve structure of aged skin
  
• -Smooth rough skin
  
• -Reduce photodamage, mottled hyperpigmentation, skin spots and lesions
  
• -Improve overall skin appearance
  
• -Stimulate wound healing
  
• -Protect skin cells from UV radiation
  
• -Reduce inflammation and free radical damage
  
• -Increase hair growth and thickness, enlarge hair follicle size