Why return it? The effect is scientifically proven and in our case the device does its job. The use of daylight lamps can help reduce the symptoms caused by a lack of light. When the bright light hits the retina, the body reduces melatonin production and instead releases more of its "counterpart", the neurotransmitter serotonin. This makes us feel fitter overall and, in many cases, more balanced.

The fact that light therapy with a good daylight lamp can actually help to alleviate the symptoms of winter depression has already been scientifically proven several times. For example, a double placebo-controlled study certifies that an efficient treatment with light can achieve a similar effect as the use of a mild antidepressant. Many psychiatrists and sleep researchers also confirm the positive effect of light showers on general well-being.

In practical tests, we were actually able to determine an invigorating effect through the use of the daylight lamps. This is especially true if you use them in the early morning hours in a gloomy office. The brightness actually makes you feel awake faster in the morning.

to each his own😉 but we wouldn't want to miss the device in any case... daily use and it lifts the mood... why not try it and keep the beurer tl 90?