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Copper-tripeptide complexes have been shown to stimulate the proliferation of dermal papilla cells in culture and because dermal papilla vitality is tied to a follicles ability to sustain anagen, anything that keeps these cells proliferating and alive is at least directionally favorable

Here are the concentrations you get with different water volumes

Alberdi et al., 2011)

It is often a sign that the supplement is either not being absorbed well or is irritating the stomach lining due to its formulation

Does Hyaluronic Acid cause acne

confirmed no cytotoxicity to HaCaT keratinocytes or human dermal fibroblasts across a six-log concentration range (0.0058 to 5800 micromolar) 3