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Importantly, women appear to respond well at lower injectable doses, and the most common approach combines topical and injectable use simultaneously for maximum cosmetic effect

These include: Oxytocin , which degrades when exposed to benzyl alcohol Desmopressin and vasopressin , both sensitive to the preservative hCG (human chorionic gonadotropin) , which should use sterile water or saline IGF-1 LR3 and IGF-1 DES , which require 0.6% acetic acid solution instead NAD+ , which also degrades in bacteriostatic water within 24-48 hours For these compounds, use preservative-free sterile water or the solvent specified by the manufacturer