heilys® Blog

Knowledge about light, energy & vitality

Here you can find out the latest findings from science and practice: explained in an understandable way, well-founded and inspiring for a healthy, energetic life.

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Most read

Red light for Hashimoto

Studies have shown that red light therapy can have a positive effect on thyroid function in people with Hashimoto's thyroiditis...
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Help with Long Covid

Long COVID poses a growing challenge: millions of people are also suffering...
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Losing weight with red light

There is hardly anything more frustrating than working hard at the gym but still...
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About the author

Yike Pan

Yike Pan is the founder of heilys®, an engineer, and a light researcher. With over 20 years of experience in electrical engineering, architectural lighting, and research at Eindhoven University of Technology, he is now dedicated to a clear mission: bringing healthy, bioactive light into everyday life—precisely, effectively, and scientifically.

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heilys® Blog

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NIR-Lichttherapie: Mechanismen und klinische Evidenz
Technology / technologie

Pulsed vs. continuous red/NIR light therapy: Mechanisms and clinical evidence

By Yike Pan

Photobiomodulation (PBM), or low-level laser therapy, uses red to near-infrared (NIR) light to stimulate healing, alleviate pain, and reduce inflammation. A key point of discussion in research is whether pulsed PBM (with periodic light pulses)...
Was ist der Abstrahlwinkel bei Rotlichttherapie?
Technologie Technology / technologie

What is the beam angle in red light therapy?

By Yike Pan

When it comes to red light therapy devices, we often encounter terms like power , wavelength , and dose . However, another crucial factor that is often overlooked is the lens's beam angle . This...
Dosierung bei Rotlichttherapie
Technology / technologie

Dosage for red light therapy

By Yike Pan

Red light therapy is enjoying increasing popularity due to its diverse health benefits – from anti-aging and pain relief to deep muscle regeneration. However, to truly reap these benefits, correct dosage is essential. This guide...
Die richtige Bestrahlungsstärke für Rotlichttherapie: Warum mehr nicht immer besser ist
Technology / technologie

The correct radiation intensity for red light therapy: Why more isn't always better

By Yike Pan

What is irradiance? Irradiance refers to the power of light emitted per unit area and is usually measured in milliwatts per square centimeter (mW/cm²). In red light therapy, it plays a crucial role in determining...
Wellenlänge und ihre therapeutische Wirkung
Technology / technologie

Wavelength and its therapeutic effect

By Yike Pan

Why wavelengths are crucial Light is not only a source of brightness, but also a form of energy that can deeply influence biological processes. Light is frequency – and different frequencies have different colors and...
Schuppen loswerden mit Rotlichttherapie: Natürliche Lösung für eine gesunde Kopfhaut
Skin / peau

Get rid of dandruff with red light therapy: A natural solution for a healthy scalp

By Yike Pan

Do you suffer from persistent dandruff, dry or oily scalp? Red light therapy can help! It reduces inflammation, regulates sebum production, and promotes scalp health. With the heilys Gen30 (targeted treatment) and heilys Gen70 &...
Trockene Augen? Natürliche Lösung mit Rotlichttherapie
Eyes / yeux

Dry eyes? Natural solution with red light therapy

By Yike Pan

Do you suffer from dry, irritated eyes? Learn why conventional treatments are often insufficient and how red light therapy (670 nm) offers a natural, scientifically proven solution. Studies show that red light activates the meibomian...
Wochenbettdepressionen und Rotlichttherapie
Sleep / sommeil

Postpartum depression and red light therapy

By Yike Pan

The birth of a child is a life-changing experience that brings joy but also challenges – one of which is postpartum depression. Explore how red light therapy, with its gentle, non-invasive effects, can help alleviate...
Schöne, gesunde Haare: Rotlichttherapie als Mittel gegen Haarausfall!
Skin / peau

Beautiful, healthy hair: Red light therapy as a remedy for hair loss!

By Yike Pan

Discover how red light therapy gently combats hair loss. It stimulates hair growth, improves blood circulation in your scalp, and strengthens hair follicles sustainably. Without side effects and completely painless, it offers a scientifically sound...