Recent human topical evidence A 2023 IRB-approved 21-woman topical trial of NEEL gel (a stabilized GHK-Cu topical) reported an average 28% increase in skin collagen density at 3 months, with a top quartile reporting 51%
Dosing Protocol Research-use protocol examples with verified 100 mg vial conversions
Research also shows it stimulates collagen and elastin, improves skin firmness, supports hair growth, and helps protect cells from oxidative stress
In practice, some clinicians and wellness providers administer GHK-Cu to promote skin rejuvenation, hair growth, and tissue healing
Planning insight: if the first week is about getting through the body's reaction, the next several weeks are about protecting routine, judgment, and relapse resistance
Nausea or Upset Stomach: In rare cases, individuals may experience mild nausea or upset stomach