Neither is better, but both are essential for good health and well-being
Check: Vial integrity no cracks, rubber stopper seated, aluminum cap intact Powder appearance pale blue-green cake, NOT pure white (pure white suggests GHK without copper) Labeling batch/lot, milligram content, "GHK-Cu" (not just "GHK"), "for research use only" Cold pack reputable vendors ship with cold packs in warm months Storage Guidelines Key point: Store reconstituted GHK-Cu in a dark corner of your fridge to limit light exposure
Research surprisingly shows that intravenous glutathione injections are not necessarily more effective than oral forms for skin whitening
Pregnancy/nursing: Not enough safety data in pregnant or breastfeeding women
It is not intended nor implied to be a substitute for professional medical advice
Always check the packaging for the most current ingredient and allergen information