Headaches and fatigue can sometimes be linked to reduced calorie intake, dehydration, or electrolyte shifts
(You might see tripeptide-1 on the bottle which means its also a copper peptide.) They arent new but they do seem to be having a moment in terms of the cultural zeitgeist
Russian preclinical literature describes 25-100 mcg per administration, subcutaneous or intranasal, prior to sleep
Full hair serum ingredient list Aqua, Butylene Glycol, Glycerin, Copper Tripeptide-1, Acetyl Tetrapeptide-3, Trifolium Pratense Flower Extract, Arginine, Panthenol, Niacinamide, Sodium Hyaluronate, Allantoin, 1,2-Hexanediol, P-Hydroxyacetophenone, Xanthan Gum, Disodium EDTA
At the 8mg maintenance dose, you are using 80% of a 10mg vial per week, meaning you need roughly one vial per week