Frequently asked questions
Frequently asked questions
About the product
How long does it take to see results?
Most people notice changes after four to eight weeks of consistent daily use. Skin-related effects (tone, texture) tend to show up earlier than deeper effects (recovery, joint comfort). Some users report immediate post-session effects — a brief sense of warmth, relaxation, or alertness — but the cumulative changes take weeks. Consistency matters more than session length.
How often should I use it?
Daily, or close to it. Five to seven sessions per week of 10–20 minutes each is what the research uses. Less than three sessions a week and you're unlikely to see much.
How close should I stand?
Six to twelve inches from the panel is the standard range. Closer is more intense; farther is gentler. The treatment surface is rated at six inches — that's the distance where the irradiance numbers we publish apply.
Can I use it on my face?
Yes. All HYS RED panels are safe for facial use. For dedicated face sessions, the HYS RED 100 mask is the easiest format. For combined face + body, the 300, 600, and 900 panels all work — just close your eyes or wear the included goggles.
Do I need to wear the goggles?
Red light therapy is not damaging to the eyes at therapeutic distances, but the LEDs are bright. Goggles are included with every panel and we recommend wearing them — especially for sessions where you'd otherwise close your eyes. If you prefer to keep your eyes open during use, goggles are not optional, they're essential.
Will it heat my skin or burn me?
No. The LEDs run cool at therapeutic intensities. You'll feel a gentle warmth on the skin during longer sessions, similar to mild sun warmth, but the panel does not produce burning levels of heat. The panel housing itself can get warm to the touch during extended use — that's the cooling system working.
Is there any EMF?
Zero EMF at treatment distance. We use shielded, low-EMF drivers. If you have a meter and want to measure, you'll find readings at six inches indistinguishable from ambient.
About the science
What wavelengths do HYS RED panels use?
All HYS RED panels deliver 660nm red light and 850nm near-infrared light from the same dual-chip LEDs. These are the two most studied wavelengths in photobiomodulation research.
Why these wavelengths and not others?
660nm and 850nm sit in what researchers call the optical window — the wavelengths that human tissue absorbs efficiently. Other wavelengths like 630nm, 810nm, and 830nm have been studied and show benefits too, but 660 and 850 have the most extensive research behind them and represent the strongest evidence base for at-home use.
How is this different from a tanning bed or sun exposure?
Completely different. Sun exposure and tanning beds emit UV light, which damages DNA. Red light therapy emits red and near-infrared light, which is non-ionizing and does not damage DNA. The mechanism is also different — sun and UV affect skin pigmentation; red light affects cellular energy production.
About ordering and shipping
Where do you ship from?
We ship from warehouses in both the United States and Canada. Orders are routed to whichever warehouse is closer to you to keep shipping fast and avoid cross-border duties.
How long does shipping take?
Two to five business days for US and Canadian orders. We don't currently ship outside North America.
Is shipping free?
Free shipping on US orders over $200 and Canadian orders over $250 CAD. Below that, flat-rate shipping applies. Most panels qualify automatically.
What if I want to return it?
You have 30 days from delivery to return your purchase for a refund. Devices must be returned in original condition and packaging. Customer covers return shipping. Opened or used devices may be subject to a 25% restocking fee — standard for the category. Full policy on the Shipping & Returns page.
What's the warranty?
Two years on all HYS RED panels and accessories, covering manufacturing defects. If anything goes wrong, email us and we'll make it right.
Still have questions?
Email us through the contact page. We answer every message, usually within one business day.