1 Black skin and Asian skin have thicker and more compact dermis than white skin. This is also why blacks and Asians have fewer facial wrinkles than whites.  Black skin has more casual lipids and more moisture in the stratum corneum than white skin.
A software development kit (SDK or  devkit ) is typically a set of software development tools that allows the creation of applications for a certain software package, software framework, hardware platform, computer system, video game console, operating system, or similar development platform.
software developer's kit (SDK) A software developer's kit (SDK) is a set of programs used by a computer programmer to write application programs. Typically, an SDK includes a visual screen builder, an editor, a compiler, a linker, and sometimes other facilities. The term is used by Microsoft, Sun Microsystems, and a number of other companies.