

BENEFITS OF BRIGHT LIGHT THERAPY
“Do you experience increasing fatigue, sleep problems, lack of motivation, or low energy during the darkest months of the year? Do high-calorie treats and lounging on the couch feel especially tempting throughout the long winter? If these feelings intensify particularly between October and March, you might be dealing with seasonal fatigue.”
You’re not alone—many others feel the same way. By making high-quality bright light therapy a regular part of your routine, you’ll likely notice a real difference. Once you start using bright light during the dark months, you may find that your usual seasonal tiredness and foggy feeling don’t show up at all.
Using bright light at home is easy with Finnish-made Innolux bright light devices.
FEELING TIRED DURING THE DARKEST SEASONS: SEASONAL FATIGUE AND ITS CAUSES
During the dark seasons, many people living in the north experience seasonal fatigue, primarily triggered by a lack of bright light. Natural sunlight is available only for a short time each day—and that time is often spent indoors, for example at work.
- Seasonal fatigue, also known as subclinical seasonal affective disorder, is much more common than full-blown seasonal depression. About 27% of Finns experience it.
- Only 10% of Finns report that seasonal changes have no effect on their energy levels.
Typical symptoms of seasonal fatigue include lack of motivation, daytime tiredness, social withdrawal, irritability, sadness, cravings for carbohydrates or sugary foods, difficulty waking up, oversleeping, low energy, and weight gain. Relief can be found through regular exercise, a healthy diet, and consistent use of bright light therapy.

WHY DOES SEASONAL FATIGUE OCCUR?
Waking up in the summer feels easier because it's already light in the morning. The early-rising sun and increased light levels stop the production of nighttime melatonin and help regulate the body's natural circadian rhythm. Melatonin is a natural hormone produced by the body, especially in the evening and at night when it's dark.
Produced by the brain’s pineal gland, melatonin acts like the body’s own sleeping aid: when melatonin is released, it makes you feel drowsy.
During the winter months, as daylight decreases, melatonin production and the natural circadian rhythm can become disrupted. Among external cues, morning light is the most powerful regulator of the human body clock—and melatonin is the best-known hormone involved in managing that rhythm.

BRIGHT LIGHT BOOSTS YOUR ENERGY
Research clearly shows that light has a strong effect on melatonin production. When melatonin production is stopped in the morning, its release naturally begins again in the evening at the right time.
The challenge during the dark winter months is that it’s still dark when you wake up. Your body may continue producing the sleep-inducing hormone melatonin into the early morning hours—even after you've woken up. There's only a short window of daylight before it gets dark again, and melatonin production starts increasing once more. The fatigue you feel isn’t imaginary or a sign of laziness—it’s your body’s natural response to the lack of light.
Bright light helps reduce that feeling of tiredness. The best time to use bright light is in the morning, right after waking up. This way, it not only energizes you for the day but also helps regulate your internal clock throughout the day.
BRIGHT LIGHT THERAPY IS SCIENTIFICALLY PROVEN TO BE EFFECTIVE
Bright light therapy has been studied in Europe and North America for over 40 years. Finnish research on the benefits of bright light is also extensive.
Throughout these studies, bright light has been used to support people suffering from seasonal fatigue, and the results show that symptoms improved in 60–90% of those who used bright light therapy.
Seasonal fatigue and daytime exhaustion
Recent research has highlighted the benefits of bright light in preventing daytime exhaustion and fatigue among individuals experiencing seasonal fatigue. Studies show that bright light therapy contributes to overall well-being (1) and can ease symptoms of seasonal fatigue after just one use (2).

INNOLUX BRIGHT LIGHT DEVICES
Innolux bright light devices provide powerful light that compensates for the lack of natural sunlight during the darker seasons. These lamps meet all the quality standards required for effective and safe bright light therapy.
“Not just any bright lamp is suitable for light therapy. To be effective, a bright light must produce at least 2,500 lux. All Innolux light therapy lamps provide a safe and effective light intensity of up to 10,000 lux, with a pure white light color (4000 K).”
All Innolux bright light lamps are designed for versatile, year-round use. With a built-in dimmer, you can easily adjust the light level to suit different situations and moods.
Our bright light devices are manufactured to meet high-quality and safety standards. Innolux products are produced under a quality management system certified to ISO 9001 and comply with the SFS-EN 60598 lighting standard.

USING INNOLUX BRIGHT LIGHT DEVICES
Using our bright light devices is easy, safe, and effective. Their stylish design allows you to use them in a variety of spaces throughout your home.
Positioning the bright light
Bright light works through your eyes. Depending on the type of lamp, the device should be placed 40–200 cm from your face. You’ll receive specific instructions with your chosen model. The closer you are to the light source, the more effective and shorter each session can be. You don’t need to look directly into the light—having it within your field of vision is enough.
This means you can use bright light while doing other things: it works great as a reading lamp, to light your breakfast table, as task lighting at your desk, or even as a gentle boost while watching TV.
Usage time
Just 15 minutes of continuous use can provide benefits, but for the first 1–2 weeks, it’s best to aim for a daily session of up to two hours to kickstart the effect. Most people start noticing results within a week, feeling lighter and more energized—like in summertime.
After the initial weeks, you can reduce usage to about 30 minutes a day, five days a week. Continue this routine throughout the winter months for lasting benefits.
For best results, schedule your light sessions in the morning, ideally between 6:00 and 10:00 a.m. Avoid using bright light therapy after 6:00 p.m., as it may interfere with your natural sleep rhythm.

BUY YOUR OWN BRIGHT LIGHT DEVICE AND FEEL THE DIFFERENCE
You can order our most popular bright light therapy lamps directly from our online store.
At Innolux, our goal is to bring beneficial light into every day. With nearly 30 years of experience in specialized lighting solutions, our product development is always based on scientific research, high-quality materials, and stylish design.
Many of our bright light lamps have performed exceptionally well in independent tests—for example, Innolux claimed the top three spots in Tekniikan Maailma’s bright light comparison in 2019.
- Made in Finland – Key Flag and Design from Finland certified
- Free home delivery in 2–5 business days
- Products crafted by top designers
- High-quality materials for long-lasting choices
- Multiple payment options available
Order directly from our online store and receive your products straight from our factory in Kerava, Finland.