In the US, the 16 Baumann Skin Types® have been the subject of the New York Times bestselling book The Skin Type Solution (Bantam 2005, 2010) and a public television PBS special Skin Type Solutions with Dr. Leslie Baumann (2010, 2011). The Skin Type Solution has also been published in other countries, including Australia, UK, Brazil, Turkey, China, Vietnam, and South Korea. The skin typing system was patented in 2004 (1).