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In the UK, any medicine must hold a valid Marketing Authorisation granted by the MHRA before it can be legally sold or supplied for medicinal purposes
Short-term room temperature exposure (around 1 month) during shipping/handling is generally acceptable if kept sealed, dry, and protected from heat/light
If youre already familiar with the basics of GHK-Cu, the next question becomes more practical: what can it actually do for aging skin, and what results should you realistically expect
Peptide transformation under light exposure can convert active compounds to inactive or potentially problematic variants
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