Yes, some MAC foundations may contain talc. Talc is a common ingredient used in cosmetics, including foundations, as it helps to provide a smooth texture and absorb excess oil. However, it's important to note that not all MAC foundations contain talc, as the formulation may vary depending on the specific product. If you have concerns about talc or any other ingredients, it's always a good idea to check the ingredient list or reach out to the brand directly for more information.