Smoking cessation patches are potentially useful for people who need to quit smoking as long as they are determined to do so. Nicotine patches are available in a variety of models and are generally used for about a month and a half to two months, with the maximum time not exceeding three months. The principle of the patch is that the patch is a nicotine transdermal patch, whose main active ingredient is nicotine, which is slowly and continuously absorbed through the skin in small quantities, thus gradually desensitizing the nicotinic acetylcholine receptors in the brain, and after a period of time, the intake of nicotine by smokers who have quit smoking will gradually be reduced to a minimum value. Smoking cessation patch varies from person to person in dosage, if the smoker is usually addicted to cigarettes and smokes more than two cartons a day, he or she needs to adjust the dosage of the smoking cessation patch, and it is recommended that the skin position of the smoking cessation patch be changed each time to avoid localized redness and swelling of the skin, itchiness, allergies, and so on. If you want to quit smoking, you must make up your mind, try to usually stay away from cigarette-polluted environments, to avoid inhaling second-hand smoke, but also can be equipped with some small snacks, to reduce the dependence on cigarettes.