The vermilion border of the lips (lip for short) is the only part on the face where the oral mucosa is persistently exposed to the outside. Despite its prominent presence on the face, constituting not only the target of cosmetics but also the site for various skin diseases, its functional properties remain almost unknown.
Source : British Journal of Dermatology Volume 150, Issue 3, 2004
Human lips have considerably less keratin than the rest of the face, and have no sweat glands, sebaceous glans, or hair. Blood vessels are closer to the surface, producing the so called 'vermilion border' which can be very distinct in lighter-skinned individuals.
The 'vermilion border' has (or is presumed to have) an intense psychological impact which is ubiquitous, but as yet unexplained.
Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.
If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !
Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.
( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)
You are currently viewing an auto-translated version of Wikenigma
Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.
Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.