Multi-Wavelength Technology
Safe, Hands-Free Design
Medical-Grade Comfort
Trusted by Users

Frequently Asked Questions

Q: How long should I use the Eterno per session?

Most users run 10–20-minute sessions. Follow the built-in timer presets. If you're layering the Light Fusion sheet-mask protocol, apply the sheet mask for 15 minutes first, then run the Eterno session immediately after.

Q: Is the Eterno safe to use on my face every day?

Yes. LED light at these wavelengths and intensities is non-ionizing and widely used in cosmetic and wellness settings. That said, avoid shining light directly into open eyes — close your eyes during the session or use the included eye protection if provided.

Q: What does each wavelength do?

630 nm and 660 nm are red and deep-red wavelengths that interact with skin tissue at deeper layers. 525 nm (green) and 580 nm (yellow) interact with the skin's surface layer. Together, the four wavelengths address the full depth of facial tissue in a single session.

Q: What is the Light Fusion protocol?

Light Fusion is a two-step routine: apply the colour-matched sheet mask (sourced from South Korea) for 15 minutes to prep the skin, then follow immediately with the matching Eterno wavelength. Sheet masks are sold separately on emr-tek.com.

Q: Does the mask touch my face?

No. The Eterno's rigid shell floats 3 mm above the skin surface. No silicone pressing against your cheekbones, no trapped heat, no bacterial contact. The adjustable head strap holds it in position hands-free.

Q: How does the Eterno compare to the Firefly or Firewave?

The Eterno is a face-specific mask with four wavelengths optimized for facial use. The Firefly and Firewave are panel-format devices designed for broader body coverage (joints, muscles, torso). If you want targeted facial light therapy with a hands-free fit, the Eterno is built for that. If you need full-body or multi-area coverage, look at the panels.