Sir My lip is black Can u give any good medicine...

how to make lips color lighter :
1. use home remedies masks on lips such as : cinnamon ,  honey , olive oil
2. use lips Balm, Lips Moisturizer
3. pass a cube of ice on lips daily 
4. use products for lips care such as : 
- Palmer's Cocoa Formula Butter Lip
- Himalaya Herbals Natural Moisturizing Lip Butter
- Elizabeth Arden Advanced Lip Fix Cream
5. if the following advices didnt work , consult a dermatologist 
what are the causes of dark lips :
1. dryness
2. smoking
3. anemia 
4. some medication side effects 
5. bad habits such as biting lips 
general advices :
1. drink plenty of water 
2. use sun-block products 
3. avoid lips sucking or biting 
4. avoid smoking