Our philosophy
Light isn't just for seeing.
Your body reads light as a signal. Bright, cool light tells it to stay alert. Warm, low light tells it the day is winding down. That's why the same desk can feel energizing at 10am and exhausting at 10pm.
Most homes and offices use one harsh overhead light for everything. We built the Halo so you can choose the light that fits the moment.
Cool white
Light for focus
Studies link cooler, blue-enriched light with faster reactions and higher alertness during demanding tasks. Switch to cool white when you need to lock in.
Warm, dimmed
Light for rest
Bright light late in the evening delays melatonin, the hormone that helps you wind down. Switch to warm and dim it low when the work is done.
What the research says
~90 min
Ordinary room light before bedtime pushed back the start of melatonin by about 90 minutes compared with dim light.
Gooley et al., Journal of Clinical Endocrinology & Metabolism, 2011
Read the study6500K
Cool, blue-enriched light led to faster reaction times on attention tasks and higher alertness than warmer 2500–3000K light.
Chellappa et al., PLOS ONE, 2011
Read the study3000K
In an office study, warm 3000K light at moderate brightness produced the lowest mental workload, showing that the right light depends on the task.
Bao et al., Scientific Reports, 2021
Read the studyNext day
Reading on a light-emitting screen before bed delayed sleep and circadian timing and reduced alertness the next morning.
Chang et al., PNAS, 2015
Read the studyThese independent studies didn't test the Halo Lamp. We share them because they shaped how we think about what's best for you.
Free US shipping · 30-day returns
Do your best work in better light.
Try the Halo Lamp for 30 days. If it doesn't change how you work, send it back.
Shop the Halo