Just like any other stain, tooth stains do not go away on their own, so even after you quit smoking, the stains that the cigarette smoke left behind will stay forever unless you apply a tooth whitening treatment. You can purchase teeth whitening kits over the counter at your local drug or grocery store. However, you can also get professional tooth whitening treatments at your dentist for more stubborn stains. To learn more, read our blog article "Smokers Teeth: The Effects on Oral Health."