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Widespread use of the ingredient for skin-bleaching purposes and a thriving black-market pipeline have led to questions about its safety, and for good reason: Hydroquinone isnt meant to be used at high levels or for extended periods of time, and when it is, there could be dangerous results
In one investigation, GHK-Cu was speculated to upregulate tight junction proteins ZO-1 and occludin in a co-culture model of epithelial-macrophage interaction (via the SIRT1/STAT3 pathway), thereby supporting tissue-barrier integrity in inflamed mucosa
BPC-157 is not a painkiller that masks symptoms
However, they are still very effective
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