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Griffith DA, Edmonds DJ, Fortin JP, Kalgutkar AS, Kuzmiski JB, Loria PM, et al
Cysteine plays a crucial role in many bodily functions and acts as a detoxifying agent, promoting a normal functioning immune system
GHK-Cu also boosts glycosaminoglycans (like hyaluronic acid) and proteoglycans, improving moisture retention and plumpness
Physicians often begin with a lower dose to check for tolerance, and the amount can be adjusted over time, but use is usually limited to two or three times a week
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