Wei W, Chen X, Peng L et al (2021) The entering of polyethylene terephthalate microplastics into biological wastewater treatment system affects aerobic sludge digestion differently from their direct entering into sludge treatment system
Common Forms * Topical serums and creams * Cosmetic-grade raw powder * Subcutaneous injectable research formulations * Hair and scalp peptide serums Possible Side Effects Possible side effects may include: * Mild redness or irritation * Temporary skin sensitivity * Dryness or tightness * Injection-site irritation (injectable research use) Some users may experience irritation when combining copper peptides with strong acids, retinoids, or highly active exfoliants
When formulated thoughtfully, this pairing offers a more resilient approach to brightening and antioxidant protection than either ingredient alone
These effects mean GHK-CU should, theoretically, calm irritated skin rather than worsen it
Allergic Reactions While uncommon, allergic reactions represent more serious glutathione side effects
