What causes the red ring around my lips?

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  • American Academy of Dermatology (AAD). "Contact Dermatitis." Dec. 7, 2006 (Accessed Oct. 7, 2009) http://www.skincarephysicians.com/eczemanet/contact_dermatitis.html
  • Beltrani, Vincent S., M.D., et al. "Contact Dermatitis: A Practice Parameter." Annals of Allergy, Asthma & Immunology. 9/06 (Accessed Oct. 6, 2009) http://www.aaaai.org/search/?cx=010195695855076926430%3A3j7wmn664zg&cof=FORID%3A11&q=lipstick&sa=GO#249
  • Ngan, Vanessa. "Irritant Contact Dermatitis." New Zealand Dermatological Society. Sept. 3, 2009 (Accessed Oct. 7, 2009)http://dermnetnz.org/dermatitis/contact-irritant.html