Search for a light therapy lamp online and you'll quickly run into dozens of options.
Some advertise:
10,000 lux.
Others advertise:
20,000, 30,000, or even 40,000+ lux.
Some are tiny desktop boxes.
Others look like ordinary desk or floor lamps.
Some offer one brightness setting, while others allow you to adjust brightness and color temperature.
So how do you actually choose?
The answer isn't simply:
Buy the lamp with the biggest lux number.
A good light therapy lamp should fit both its intended use and the way you actually live.
Here are seven things worth checking before you buy.
1. Don't Just Look at Lux—Look at Distance
This is probably the most important specification to understand.
You'll see 10,000 lux everywhere when shopping for light therapy lamps.
But lux measures the amount of light reaching a surface.
That means distance matters.
For example:
Lamp A
10,000 lux at 6 inches
Lamp B
10,000 lux at 18 inches
Both can advertise themselves as:
10,000-Lux Light Therapy Lamps
But they may provide very different everyday experiences.
With Lamp A, you may need to stay quite close to the device.
Lamp B may allow you to sit more naturally while drinking coffee, working, or reading.
So before buying, ask:
At what distance does this lamp provide the advertised lux?
A good product page should make that information easy to understand.
2. Consider How You'll Actually Use It
Before comparing specifications, imagine where the lamp will live.
Will you use it:
at your desk?
beside your sofa?
while eating breakfast?
next to a reading chair?
in a small apartment?
The answer can completely change which form factor makes sense.
A compact light box might be convenient if you always use it at a desk.
But if you move between your desk, sofa, and reading chair, a floor-standing design may fit your lifestyle better.
The best lamp isn't necessarily the smallest or brightest.
It's the one that fits naturally into your routine.
3. Look for Adjustable Brightness
Maximum brightness gets most of the attention.
But adjustability may matter just as much.
Why?
Because you probably don't want the same light intensity for every activity.
Imagine:
7 AM
You're beginning your bright-light routine.
10 AM
You're working on your computer.
3 PM
You're reading.
8 PM
You're relaxing.
Those four situations don't necessarily call for identical lighting.
A lamp with adjustable brightness gives you more control over how the light fits into your day.
Think of maximum lux as:
what the lamp is capable of
and adjustable brightness as:
how usable that capability actually becomes.
4. Check the Color Temperature Options
Color temperature describes whether white light appears warmer or cooler.
It's measured in Kelvin (K).
You'll commonly see ranges such as:
2700K — Warm
4000K — Neutral
5000–6500K — Daylight-like
Why does this matter?
Because the light you enjoy in the morning may not be the light you want while relaxing at night.
A cooler, daylight-like appearance may feel appropriate for your morning or workspace.
A warmer appearance may feel more comfortable for ordinary evening lighting.
This is particularly important if you want your light therapy lamp to double as an everyday lamp.
And remember:
Color temperature is not the same as lux.
A 6500K bulb isn't automatically a light therapy lamp.
5. Check for UV Information
Bright light therapy is about visible light, not tanning.
So when comparing lamps, look for clear information about ultraviolet light.
Many modern light therapy devices are designed to be UV-free or UV-filtered.
The important thing is transparency.
The manufacturer should clearly tell you what you're getting.
If the product page talks extensively about brightness but says nothing about UV performance, that's something worth checking before purchasing.
6. Pay Attention to Size and Positioning
This is one of the most underestimated factors.
Imagine buying a powerful light therapy lamp only to discover:
it takes up half your desk.
Or:
you can't position it comfortably.
Or:
the light source sits too low for your preferred setup.
Specifications don't matter much if using the lamp every morning becomes inconvenient.
Before buying, look at:
- Overall dimensions
- Base size
- Lamp height
- Head adjustment
- Neck flexibility
- Recommended usage distance
- Direction of the light
Then ask yourself:
Can this lamp comfortably fit where I actually want to use it?
7. Ask What Happens After Your Morning Routine
This is the question we think deserves more attention.
Suppose you use your light therapy lamp in the morning.
Then you're finished.
What happens to it for the remaining 15 hours of the day?
For many traditional light boxes:
Nothing.
It stays on the desk.
Or gets put away.
But if you're already buying a lamp, it may be worth considering whether it can serve another purpose.
Can you use it for:
working?
reading?
crafting?
studying?
ordinary room lighting?
If it offers adjustable brightness, multiple color temperatures, and flexible positioning, the same lamp may remain useful long after your morning bright-light routine is finished.
Desk Light Box or Floor Light Therapy Lamp?
This is one of the biggest decisions you'll encounter.
Neither is automatically better.
They simply fit different lifestyles.
Choose a Desktop Light Box If:
You primarily use light therapy at your desk.
You have enough desktop space.
You want something compact or portable.
You don't need the lamp for everyday illumination.
Consider a Floor Light Therapy Lamp If:
You want to keep your desk clear.
You move between different seating areas.
You want flexible positioning.
You read or do crafts regularly.
You want the same lamp to remain useful throughout the day.
For apartments and home offices, that flexibility can be especially valuable.
What About Full-Spectrum Light?
“Full spectrum” appears frequently in lighting marketing.
It generally refers to white light containing a broad range of visible wavelengths.
But it shouldn't be treated as a complete buying criterion.
A lamp can say:
FULL SPECTRUM
and still leave unanswered questions about:
Lux
Distance
Brightness adjustment
UV
Positioning
and
Everyday usability.
Treat full spectrum as one part of the specification—not the entire story.
Does More Lux Mean a Better Lamp?
Not necessarily.
Suppose one lamp advertises:
48,000 Lux
and another:
10,000 Lux.
It may be tempting to assume the first is automatically almost five times “better.”
That's not how you should interpret the numbers.
You need to know:
At what distance was each measurement taken?
And:
Can the brightness be adjusted?
A higher maximum output can provide a wider available brightness range.
But maximum output isn't necessarily the setting you'll use for every activity.
That's why:
More maximum brightness can mean more flexibility—not necessarily more is always better.
What About Glare?
This is another specification that can get overlooked.
A lamp can be technically powerful but uncomfortable to sit near.
Consider:
light diffusion
lamp-head size
positioning
and
whether the light can be directed without requiring you to stare into it.
The most impressive specification sheet in the world doesn't matter much if you avoid using the lamp because the experience is uncomfortable.
A Quick Light Therapy Lamp Checklist
Before clicking “Buy,” ask yourself:
✓ Lux
How much light does it provide?
✓ Distance
Where was that lux measured?
✓ Brightness
Can I adjust it?
✓ Color Temperature
Can I change how warm or cool the light looks?
✓ UV
Does the manufacturer clearly provide UV information?
✓ Positioning
Can I comfortably place the light where I need it?
✓ Everyday Use
Will I still use this lamp after my morning routine?
If a product answers all seven questions clearly, you're in a much better position to compare it fairly.
Don't Buy a Number. Buy a Lamp You'll Actually Use.
It's easy to shop for light therapy lamps like you're comparing specifications on a spreadsheet.
10,000 Lux.
20,000 Lux.
48,000 Lux.
But eventually the lamp has to leave the product page and enter your home.
It has to fit beside your chair.
It has to work around your desk.
It has to be comfortable.
And ideally:
You should actually want to turn it on every day.
That's why usability matters as much as impressive specifications.
From Bright Mornings to Everyday Light
The GLOWRIUM C032 Light Therapy Floor Lamp is designed around this idea.
Rather than creating another single-purpose light box, it combines high-output bright light with the flexibility of an everyday floor lamp.
Use brighter light for your morning routine.
Adjust it while working.
Move into comfortable task lighting for reading.
Then reduce the brightness and change the color temperature for ordinary evening use.
One Lamp. Different Moments.
Bring More Light Into Your Day.
Explore the GLOWRIUM Therapy Floor Lamp →
FAQ
How many lux should a light therapy lamp have?
10,000 lux is a commonly referenced level in bright-light therapy, but the measurement distance matters. Always check the manufacturer's recommended distance and usage instructions.
Is a 10,000-lux lamp better than a 5,000-lux lamp?
You can't determine that from the headline number alone. Distance, exposure duration, lamp design, light distribution, and intended use also matter.
What color temperature should a light therapy lamp have?
There isn't one color temperature that automatically defines a light therapy lamp. Color temperature describes the appearance of white light, while illuminance, spectrum, distance, timing, and device specifications also matter.
Should a light therapy lamp be UV-free?
Look for a product that clearly explains its UV performance. Bright-light therapy relies on visible light rather than UV exposure.
Is a floor or desktop light therapy lamp better?
It depends on how you use it. Desktop models are compact, while floor-standing designs can save desk space and provide more flexibility around work, reading, and living areas.
Can I use my light therapy lamp as a reading lamp?
If the product is designed with adjustable brightness and comfortable task illumination, it may also work well for reading. You don't need to use maximum brightness for ordinary task lighting.
