Generally use within 3-4 months of opening, and store in a cool dry place for up to 12 months. 

The Cloud 9 Deep Cleansing Balm is one you need to be extra careful with because you put your fingers into the jar. All you need to do is make sure you have clean, dry hands when you're getting cleansing balm out of the jar, and to keep the jar out of the shower. This is because wet fingers (or even steam from the shower) introduces bacteria and natural preservatives aren't as strong as synthetic preservatives, so they are limited in how long they can keep those nasty bacteria at bay.