In Canada and the United States at every major library you can find a selection of Formulary books. The best is H. Bennett Formulary series. They cover 90 years of making all kinds of things from ski wax to shoe polish and lipstick to hair shampoo. In that series of books you can find the formulas that we based 8 of our products on. That series of books is the best information anyone could ever get about chemicals and how to use them to achieve a great product.