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Plasma levels of GHK-Cu decline significantly with age, from approximately 200 ng/mL at age 20 to 80 ng/mL by age 60, a 60% reduction that correlates closely with the age-related decline in regenerative capacity
Glutathione is especially important for detoxification and immune function
For example, pairing it with a high-quality Liposomal Vitamin C can support the entire antioxidant recycling system
This progression makes sense given that thinner skin requires less structural rebuilding to show visible change
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