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The Math (So You Can Do It Yourself) Here's the formula for any vial size and any amount of water: Concentration = Peptide Amount (mcg) Water Added (mL) Then to find the injection volume: Units to inject = Desired Dose (mcg) Concentration (mcg/mL) 100 Example: 5,000mcg vial + 2mL water = 2,500mcg/mL

(PubMed) The same review warns that systemic administration (IV) may shift melanin production, altering skins natural photoprotection and potentially increasing the risk of UV-induced skin damage or cancer a risk especially relevant in sunny climates

PMID: 17986630

SIRT1 shows no substrate specificity in vitro

This thin needle does little damage to the skin upon entry