What Causes Lips to Turn Black?

Answer

Black or darkened lips can be caused by serious illness, such as cancer, but more often, this condition is due to lifestyle. If someone is already darker-skinned, certain behaviors like coffee or wine drinking, smoking, and sun exposure will cause the lips to turn black.
Q&A Related to "What Causes Lips to Turn Black?"
The black coating on the pistons is almost undoubtedly carbon buildup. A certain amount of carbon buildup is normal on any older engine; the piston's rings keep most of the oil under
http://www.ehow.com/info-tip_8732175_causes-piston...
Heat and pressure in the injection system can cause soot-like carbon particles to form in the fuel. These particles are small (on the order of 10 microns or less)
http://wiki.answers.com/Q/What_causes_diesel_fuel_...
If the PS2 is not properly plugged in, it can cause a blank or blue screens. Check to make sure the audio/visual cables are plugged into the proper spots. Also check the settings
http://www.ehow.com/list_7771064_causes-black-blue...
Mold.
http://wiki.answers.com/Q/What_causes_new_Bermuda_...
1 Additional Answer
The main causative factors of lips turning black include improper skin care, practises such as smoking, hyper-pigmentation, excessive caffeine use and allergens among other reasons.
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com