Because there's no safety data, the FDA says it may be harmful to people using it
The catch: at 340.4 daltons, GHK-Cu sits above the 500-dalton passive penetration ceiling of intact human skin
Disclaimer: This product is a cosmetic skincare product and not intended to diagnose, treat, cure, or prevent any disease
While research is lacking on risks to people with eczema who use glutathione, topical products can cause allergic reaction, irritation, stinging, or redness, especially if they contain alcohol, fragrances, or preservatives
This can contribute to fatigue, digestive issues, and metabolic disorders
Will the skin tightening from GHK-Cu be permanent