From MAC web chat:
Our Global Consumer Communications Department maintains an up-to-date ingredient database for all MAC products. They are best able to assist you with your ingredient inquiry. Please be assured they will fully assist you.
This department can be reached via phone at 1-800-387-6707, (choose option #7) between the hours of 9am-5pm (EST) Monday-Thursday and 10am-5pm (EST) Fridays or via email at consumercare-us@gcc.maccosmetics.com.