That is completely up to you. Philips EnergyLight is made to give you daylight and energy in a way that comfortably fits into your daily routine.

It’s best to use the EnergyLight in the morning, although the afternoon or evening until 8 p.m. is also fine. If you use the EnergyLight after 8 p.m., it may effect your sleep.

The information on this page applies to the following models: HF3321/60 , HF3332/60 , HF3329/60 .