Light Fusion Hair Therapy Shampoo (Canada and USA only)

Light Fusion sheet masks pair directly with the Eterno mask — that's the two-step protocol (15 min sheet mask → matched Eterno wavelength). Green sheet mask pairs with 525 nm, Red sheet mask with 630 nm, Yellow sheet mask with 580 nm. You can also use the sheet masks on their own.

Shampoo, conditioner, and other topical cosmetics are standalone — no Eterno pairing required. Use them as a normal part of your routine. They're formulated around ingredient quality, not wavelength matching.

Short version: if it's a sheet mask, it pairs with Eterno. Everything else runs on its own.

Every cosmetic product on this page has its full INCI list published on its product page — actives, base, preservatives, fragrance status. Nothing hidden.

Formulation and sourcing runs through South Korea (K-beauty standard). No parabens, no sulfates, no synthetic fragrance unless explicitly labeled.

If you have a sensitivity or you're running an active like tretinoin, read the individual product INCI before ordering — a few of the actives overlap with dermatology routines and timing matters. When in doubt, email support@emr-tek.com with your current routine and we'll tell you what plays well and what doesn't.

US orders ship in 1–2 business days, 3–5 days to your door. Free shipping over $99. International ships duty-free worldwide — no customs surprise.

Returns on cosmetics work a little differently than hardware:

• Unopened packs — full 30-day refund, no restocking fees, send them back.
• Opened packs — for hygiene reasons we can't resell opened cosmetics, so we can't refund them. If you've opened one and it's a real problem (reaction, damaged product, wrong item), email support@emr-tek.com — we'll work it out.