Nicotine patches are adhesive patches that deliver a controlled amount of nicotine through the skin. They are commonly used as a smoking cessation aid to help individuals reduce cravings and withdrawal symptoms when trying to quit smoking. The patches come in various strengths, allowing users to gradually decrease their nicotine intake over time. Users typically apply a patch to a clean, dry area of skin and wear it for 16 to 24 hours, depending on the product. It is important to follow the instructions provided and consult a healthcare professional for guidance on the best approach to quitting smoking with nicotine replacement therapy.