You can buy pure nicotine from reputable suppliers specializing in nicotine products. Look for online retailers, chemical suppliers, or vaping manufacturers that offer pure nicotine for sale. Ensure to choose a supplier that provides high-quality, pharmaceutical-grade nicotine with proper safety measures and documentation. Before making a purchase, verify the supplier's reputation, customer reviews, and compliance with regulatory standards. Additionally, consider factors such as nicotine concentration, packaging options, and shipping policies when buying pure nicotine. Always handle pure nicotine with caution and follow safety guidelines to prevent accidents and ensure safe use.