This ebook is a great tool for regulatory scientists. The replacement, refinement and reduction of animals used in scientific procedures for the elucidation of human skin sensitisation potential is a great step forward scientifically and ethically, but the relatively new structure and studies can be difficult to navigate for the generalised regulatory scientist. This ebook clearly lays out what the tests are, what science they are based on, what the regulatory pathway can be and what the limitations to each study and approach are. The video is a great visual aid which brings the OECD guidelines to life for the desk scientist and the table on page 6 makes choosing the right tests for your chemical far easier. This ebook is now a short-cut on my desktop!