Why do they not have a longer expiry date?

Morning & Night does not contain any synthetic preservatives. We believe fresh is best and what may be seen as a short shelf life is a by-product of making sure our formula stays at its optimum, to deliver the best results. The expiration is a guide and we leave it to our customers' discretion regarding whether to consume the product beyond its expiry date. However, for tangible results, we recommend consuming Morning & Night within the expiry date.