If you dream of the foundation that is used for building, then such dream denotes to the main beliefs you have. The dream shows that you already created the basics for your life. If the foundation seems unstable in a dream, then it means that you are losing the control. The foundation of the makeup, denotes to your wish to protect yourself from the surroundings or to pretend someone you are not.
Read more about dreaming of Foundation in other dream meanings interpretations.