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But is the topical GHK-Cu peptide really as age-defying as social media suggests

Professional Treatments: Some dermatologists and aesthetic practitioners offer higher-concentration copper peptide treatments, often combined with delivery systems like microneedling or iontophoresis for enhanced penetration

The peptides on this site are not FDA-approved

GHK-Cu Topical vs Injection: Which is the Best Way to Take Copper Peptide

Any other health claim about glutathione (and there are many promising connections) is in its infancy and more studies are needed. Katherine Marengo, LDN, R.D

Glutathione levels also fall with age