Engasser P G
Department of Dermatology, Stanford University School of Medicine, California, USA.
Dermatol Clin. 2000 Oct;18(4):641-9, ix. doi: 10.1016/s0733-8635(05)70215-1.
Throughout the centuries, the beauty of lips has been extolled by poets, and painters; and people in many different cultures decorate their lips. Modern cosmetics are designed not only to beautify the lips but also to moisturize and protect them from environmental hazards. Familiarity with the ingredients used in lip cosmetics is essential to recognizing and diagnosing the adverse reactions that are associated with these products.