Nicotine solution refers to a liquid containing dissolved nicotine, typically used in various applications such as the manufacturing of e-liquids for electronic cigarettes, pharmaceutical formulations, or agricultural products. In the context of vaping, nicotine solution is a key ingredient in e-liquids, providing the nicotine content that users inhale. These solutions come in various concentrations to accommodate different preferences and nicotine strengths desired by users. Pharmaceutical-grade nicotine solutions may also be used in nicotine replacement therapies to help individuals quit smoking by delivering controlled doses of nicotine without the harmful effects of tobacco smoke. Additionally, nicotine solutions can be incorporated into agricultural products as insecticides or pesticides for pest control purposes.