If You Want Better Sleep, You Need Better Light

Many people turn to blackout curtains in hopes of getting deeper sleep. But is this really the right choice?

According to a recent report (Health Chosun), blackout curtains may actually increase fatigue. That’s because the human body’s biological clock is regulated by light.

When morning sunlight stimulates the eyes, the brain’s suprachiasmatic nucleus is activated, suppressing the secretion of the sleep hormone melatonin and signaling the body to wake up.
However, when blackout curtains block out the morning light, this natural rhythm is disrupted, often leading to grogginess even after waking up.

“Just getting some sunlight in the morning can greatly improve sleep quality.”
– Dr. Young-Sang Kim, CHA Bundang Medical Center (interviewed by Health Chosun)

🛏️ Blackout curtains may actually disrupt your sleep rhythm. / Photo: Getty Images

🔗 Source: Health Chosun article (2025.04.14)

Light That the Body Remembers – Now, Indoors

SunLike technology by Seoul Semiconductor reproduces a spectrum of light that closely resembles natural sunlight.

More than just brightness, SunLike is designed to deliver natural light that awakens the body's rhythm. It allows you to experience morning, noon, and evening sunlight even indoors, helping restore your circadian rhythm in a healthy way.

In modern life where getting enough sun is often difficult, SunLike offers the light of nature through technology.

It can support daily wellbeing for infants, students, seniors, and office workers who spend most of their time indoors.

The First Step Toward Better Sleep and Vitality Is “Better Light”

Sleep isn’t only disturbed by smartphone blue light.
Insufficient or distorted light can disrupt the body’s internal clock.
What we truly need in the morning isn’t just any light—
It’s the right kind of light.

Seoul Semiconductor’s SunLike provides scientifically engineered, natural-spectrum lighting that gently wakes the body’s biological rhythm each day.

👉 Want to learn more about SunLike? Click here

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