Coffee creamers are not invincible. If you wait long enough to use up the product, it will go bad. Creamers can hold on to the consistency and freshness beyond a certain period of time. You must be mindful of the shelf life of the creamer you are using and try to finish it up before the expiration date. Healthy creamers do not come with preservatives, which can reduce their shelf life by a significant margin. You should refrigerate the creamer you are using unless the product comes with a label stating that you need not do so. You will get the best performance from most creamers if you use them up within a month or two.