This is a Q&A document concerning the Guidelines for the Research and Determination of the Safe Consumption History of New Cosmetic Ingredients (Trial). The questions addressed include:

1. What is the background for developing the Guidelines for the Research and Determination of the Safe Consumption History of New Cosmetic Ingredients (Trial)?

2. What are the requirements for the sources of safe consumption history proof materials?

3. What consistency or relevance should exist between the new ingredient intended for registration or notification and the food ingredient cited in the safe consumption history proof materials?

4. What are the common types of safe consumption history proof materials?

5. Can relevant proof materials issued by foreign regulatory authorities or technical institutions be used?

6. How should the safety risk assessment be conducted for new cosmetic ingredients with a safe consumption history?