If one experiences excess redness or a rash, they should avoid the sun, wind, heat or cold. They should halt all skin products (including all other items applied to the skin such as lotions, make up, eye liner, etc.) and allow the skin to settle down. See your dermatologist for any significant reaction.
Remember, combining many items to your face may increase the opportunity for a skin reaction. It may not be FaceMD products causing the reaction but rather the combination of products.