Hi Darkening of lips is due to Smoking occurs due to increased pigmentation of lips and many a times of the gums also due to reduced blood flow and continuous exposure to tar, nicotine and heat. It leads to Smoker s lips. The best way to get rid of the pigmentation is to completely stop smoking and you will see gradually the lips will become better, however it can takes months to see the difference. Some home remedies, that can help can be: - You can scrub your lips with a gentle face scrub or can use coarse salt and put it on lemon and scrub your lips gently - You can apply almond oil over the lips - Applying Kojic acid based cream can be helpful - You can also mix turmeric with lemon juice and apply as a lip pack - Rub ice over the lips - Drink plenty of water - Avoid excessive sun exposure and always apply lip balm with sun protection when you go out You can also consult a Dermatologist and get Laser treatment done to improve lip color, and also it helps in restoration of collagen production and reduces wrinkles from lips. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Honey Arora, Dentist