On the other hand, topical GHK-Cu is recognized as a safe peptide to use topically, with clinical studies demonstrating its support of skin health and tested specifically as ways to improve aging skin
If your reconstituted solution contains 25mg per ml, and you want 2mg, you need 0.08ml
The three-dimensional structure of the glutathione synthetase enzyme has been established [21]
Pollard JD, Quan T, Li Y, Quan T
Glutathione and hallmarks of aging: A study in older adults (n=48, aged 60-80) found that GlyNAC supplementation for 16 weeks improved several molecular hallmarks of aging, including mitophagy, nutrient sensing (reduced mTOR activation, increased AMPK signaling), inflammation (reduced NF-kB activation), and genomic instability (reduced 8-OHdG), alongside increased telomerase activity (Kumar et al., Aging, 2023) [31]