This up-to-date reference describes how retinoids and carotenoids function in the skin and how they can be utilized to prevent and treat a wide variety of skin diseases, as well as advance biomedical research in relation to cancer treatment and immunology.  Providing an in-depth update on the pharmacology, pharmacodynamics, and new applications of retinoid therapy, this source also addresses topics outside of dermatology, such as vitamin A nutrition, and the role of antioxidants in aging, metabolic activation, and cellular signaling. With chapters by internationally recognized authorities in specialties ranging from biochemistry and nutrition to molecular biology and clinical science, this source will stand as the only up-to-date source on the topic.