Compared with T/HPCIA 006-2021, the main technical changes in this standard, in addition to editorial modifications, are as follows:
——Two terms and definitions of irritation and no observable effect concentration have been added;
——The method principle of the experiment has been modified;
———Modified the configuration method of embryo buffer water;
——Modified the stock solution concentration of the positive control group;
——Added experimental methods for pre-test;
——Added experimental requirements for video recording;
——Modified the requirements for result calculation ;
——The test endpoints and evaluation indicators for result determination have been modified;
——The blank control test and positive control for quality control have been modified;
——The solvent control for quality control has been added;
——Appendix D (informative appendix) cosmetics and Reference method for raw material pretreatment.