Currently, big changes in the regulatory context are taking place and will greatly impact the cosmetic market. A recast of the European Cosmetic Directive has been adopted and is waiting for implementation very soon; this will strengthen consumer protection by limiting further the use of some ingredients and implementing stricter rules of postmarketing surveillance. The implementation of REACH (Registration, Evaluation, and Authorization of Chemicals) will also have implications by limiting the number of ingredients available to the cosmetic industry and creating high pressure on small and middle-size enterprises (SMEs). At a later stage, we may also expect changes in ingredient availabilities at a global level, with the set up of the global harmonization system (GHS). All the changes in the regulatory context are often an “affair of specialists,” and we are proud to have real experts who have accepted to discuss the latest developments in that field for the purpose of this handbook.