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When choosing skin care products containing GHK-Cu, consumers should look for products that clearly label the concentration of blue copper peptides and consider whether the overall formula of the product contributes to the stability and penetration of blue copper peptides
Although some research does suggest that dietary glutathione is poorly absorbed by the body and may not contribute to improvements in levels (11)
Protein expression levels were quantified using Western blot analysis
10.1007/s00441-019-03016-8 42 HendriksT.MastboomW
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