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Under normal physiological conditions, small amounts of 5-oxoproline are derived from gamma-glutamyl-cysteine by the action of gamma-glutamyl cyclotransferase (63)
In a way it's the secret to glutathione's function and success
In doing so, you will have guaranteed the lifespan of your vials
Fine line and wrinkle reduction occurs through multiple mechanisms, including increased dermal volume from enhanced collagen production, improved skin hydration, and better cellular organization
Oral supplementation does not
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