Philips EnergyLight is made to give you the daylight and energy that you need in a way that comfortably fits into your daily routine.
It is best to use the EnergyLight every day in order to get the best results. However, if you do not wish to take the EnergyLight home with you over the weekend, you can also maintain the positive effects of the EnergyLight by spending time outside on the days on which you cannot take your usual light baths.