The main outcomes of the book are summarized in this chapter. The importance of additives in the product final characteristics is an essential element of the chapter. Each of the additives gives a set of properties that improve the final product. These additives can be applied during the manufacture of the product or at the finishing process. The difficulty in gathering data on emissions, fate, and exposure of the additives has been highlighted in some occasions, especially at the end of the product’s life. A review of the main conclusions for each sector is also presented in this chapter. The highlights of each case study are also presented.