Unlike fat-soluble vitamins (A, D, E, and K), which are stored in fat tissue for long periods, water-soluble vitamins are processed relatively quickly: your body takes what it needs, stores a small amount in the liver, and passes most of the rest in urine
It means it didn't work well enough as a standalone pharmaceutical drug
This is an important distinction
Patients are seeking natural, undetectable injectables that regenerate, not just restore, along with next-generation laser technologies that deliver radiant skin, faster outcomes, and minimal downtime
topical formulations key differences GHK-Cu is available in multiple delivery formats, each with different bioavailability profiles, appropriate use cases, and levels of clinical oversight required