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Copper Delivery The GHK tripeptide serves as a bioavailable copper delivery vehicle

Salicylic acid also improves the shape of the pore lining, so any backed-up, smaller clogs can easily come to the surface, appearing as blackheads or white bumps

Mao et al., 2024)

SIDE EFFECTS: Mild ones include increased blood-sugar levels (a reason its often stacked with insulin)

But the effectiveness of glutathione for skin lightening depends on several factors, including skin types, existing pigmentation, dosage, method of administration, lifestyle factors, and individual skin biology

However, always consult with a healthcare professional if unsure