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Synergy of GHKCu and hyaluronic acid on collagen IV upregulation via fibroblast and exvivo skin tests
They are frequently investigated together because their potential mechanisms of action are thought to be complementary, creating a synergistic effect that is a popular subject of preclinical studies
& Sancho, P
Some patients experience both at different times during treatment
You wont go back to your original skin colour even if you stop taking these supplements, however, there is a tendency for you to be tan or darken your skin if you expose yourself to sunlight and other harsh elements
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