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The absorption process is highly efficient at physiological doses, with approximately 50% of dietary B12 absorbed when consuming around 1 microgram
Development History After the discovery of GHK-CU in the 1980s, researchers quickly identified limitations: the peptide was fragile, broke down when exposed to other skincare ingredients, and had limited penetration depth
Notably, coordinated actions of GGT and ChaC1/ChaC2 have been identified in modulating GSH levels both within and outside the cell (11)
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