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doi: 10.1186/s13046-020-01733-5 26 HaoXRenYFengMWangQWangY

The Skin Connection: Pigmentation, Psoriasis, and the Power of IV Glutathione Conditions of pigmentation like melasma or post-inflammatory hyperpigmentation are the results of the overproduction of pigments, such as melanin

Key attributes include GHK-Cu purity levels (typically 95% or higher is preferred for cosmetic efficacy), concentration within the final formulation (often ranging from 1% to 8% for serums and creams), and the form factor (lyophilized powder for stability versus pre-dissolved solutions)

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gastroenterology 54, 5363