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Research-backed : Supported by scientific studies highlighting its effectiveness in weight management
In: Intermedia priority pollutant guidance documents
It is specially formulated to target pigmentation, dark spots, melasma, and sun damage
USA 106 , 422427 (2009)
For hair growth specifically, combining topical GHK-Cu with microneedling is supported by the strongest evidence as shown in the 2025 Kuceki study which achieved 26.5% regrowth with this combination approach
32, 91592510.1046/j.1365-313X.2002.01476.x 150 YamaguchiK.MoriH.NishimuraM
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