There are two options to consider:
1) Register the ingredient to use in the CFDA to obtain license on that new ingredient. While the new ingredient licensing procedure is similar with the hygiene licensing procedure, over the last few years, there were extremely few cases where the Chinese government permitted a new ingredient. Even in those cases, the procedure had cost over hundreds of millions of won.
2) Remove the ingredient not included in the「New Inventory of Existing Cosmetic Ingredients」and replace it with other ingredients.