Usage time can vary greatly depending on each individual consumer, but we can give you some general guidelines. The first consideration is that our products are pharmaceutical grade cosmeceuticals and have higher concentrations of active ingredients than most people are used to working with. What this means is that less is more! A little bit of become goes a long way which is just one of the reasons why become products are such a great value. To help you use just the amount you need most of our products are in pumps so that small measured doses are administered. (This keeps you from tipping a bottle upside down and pouring out huge amounts thereby wasting your products.) We recommend that you use 2-3 pumps of become products twice each day to see the best results. When these usage guidelines are followed we find that most of our products last between 2-4 months. If you have had a product for longer, don't worry. You will see on the back of the bottles, jars and tubes a symbol of an open cap with a number 12. This means that from the day you open the product, it is most effective for 12 months.