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Discontinue use if irritation or rash develops and consult a physician

These effects appear to include both: upregulation of genes involved in repair suppression of genes associated with inflammation and tissue degradation In some experimental models, GHK has been shown to restore gene expression patterns associated with youthful tissue physiology

Publications reported changes in retinal structure or function and proposed that the pineal gland and retina may share aspects of developmental or transcriptional regulation