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Important formulation note: When using topical GHK-Cu products, avoid combining them in the same application session with strong vitamin C, retinol, or alpha hydroxy acids these can interact with copper peptides and reduce their effectiveness or cause irritation

How to Tell the Difference Some proponents of copper peptides argue that the "uglies" are simply a remodelling phase - damaged collagen coming to the surface before being replaced with fresh matrix

Theyre like a secret weapon, revitalizing your bodys natural defences and promoting healthier, brighter skin from within

As immune surveillance decreases abnormal cells can go undetected and thrive

However, supplemental glutathione may benefit people who have a deficiency, including people with AIDS or cystic fibrosis