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The first is impatience: stopping at week three because nothing visible is happening yet

Understanding Acne Scars and Why They Form Before treating any condition, you need to understand what you're treating

10.1155/2019/8340192 147 LiuY.-l.XuS.XuX.TangY.ShaoJ.ChenJ.et al (2025)

Interaction of glutathione derivatives with brain 2-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA) receptors

After your skin has adjusted to the initial concentration without any adverse reactions, you can consider gradually moving to products with a higher concentration of GHK-Cu if you feel your skin can tolerate it

Each test result is documented in a Certificate of Analysis (COA), which you can download directly from each product page or from our centralized COA library