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Safety during pregnancy and breastfeeding may vary
Foundational GHK-Cu (sister peptide) paper: stimulates collagen synthesis in human fibroblasts, effect beginning at 10^-12 to 10^-11 M and maximal at 10^-9 M the same potency window later reported for AHK-Cu, establishing the copper-tripeptide mechanism
Most patients don't notice a difference between 25-gauge and 27-gauge
GLOW is not an injury protocol
The tables below show concentration math, not a claim about approved formats
But, drinking tea or coffee can lower iron absorption and should be avoided when taking iron supplements
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