One of the struggles when wearing foundation over acne is it’s difficult to fully cover up pimples without foundation caking over the acne. If you’re struggling with redness, apply a green color that will neutralize the redness. Be sure to wear a full coverage foundation and apply the product with a brush or sponge (not your fingers) with a stippling motion. Stippling is a type of tapping motion that distributes more products in a specific area.