U.S. orders ship from a U.S. warehouse. Processing is typically 1–3 business days. Standard U.S. transit after the carrier scan is typically 3–7 business days. These are estimates, not guaranteed dates.

Change of mind: 30 calendar days from the delivery scan, unopened and unused only. You pay return shipping. Original outbound shipping is not refunded.

Used or worn masks: not eligible for a convenience refund. A manufacturing defect is handled under the 1-Year Limited Warranty.

Damage or shortage on arrival: email us within 7 business days of the delivery scan with photos or a video.

Start every return or claim at support@nioksstil.com and wait for an RMA before you ship anything back.

The method and price shown at checkout for your address are the amounts you agree to pay. An order confirmation is not a shipping confirmation. We email tracking when the carrier scans the label.

You are responsible for a complete, deliverable address. If the address is wrong or undeliverable, you pay redirect, return-to-sender, or reship costs unless the error is ours.

We treat the order as delivered when tracking shows delivered to the address you provided. If the carrier confirms loss before delivery, we replace or refund after that investigation. Theft after a delivered scan is a completed delivery; we will share tracking to help you, but replacement after porch theft is not automatic.

For a damaged carton, missing part, or wrong item, email support@nioksstil.com within 7 business days of the delivery scan with photos or a video. Keep the packaging. Business days means Monday–Friday, excluding U.S. federal holidays.

Occasional international checkouts are usually DAP: you pay duties and customs. Customs time is not included in the transit estimate. We do not under-declare value or mark commercial goods as gifts.

LED masks may contain batteries. We ship only by methods the carrier allows. Do not return a swollen, hot, or leaking battery without emailing us first.

LED face masks contact skin. A convenience return is available only if all of the following are true:

• You bought the item on this official website.
• You email us within 30 calendar days of the carrier’s first delivery scan.
• The item is unopened and unused.
• We issue an RMA before you ship.
• You ship within 10 calendar days of the RMA, tracked, complete with every accessory, manual, charger, and any free gift.

Unused does not include a worn mask, residue on the skin-facing surface, a broken hygiene seal, or a device paired to your phone. A brief power-on to confirm the unit turns on is inspection, not use, if the mask was not worn and the skin-facing surfaces are clean.

You pay return shipping on a change-of-mind return. Original outbound shipping is not refunded. There is no separate restocking fee on a qualifying unopened return.

Using the mask or breaking the hygiene seal ends a convenience return. It does not end a valid manufacturing-defect claim.

For a confirmed defect, dead-on-arrival unit, wrong item, or our shipping error, we repair, replace, or refund. If a replacement is not reasonably available, we refund the item price and the related outbound shipping.

After day 30, change-of-mind returns close. Defects stay under the Limited Warranty for one year from the original purchase date. A warranty replacement does not restart that year.

Misuse, drops, liquids, and unauthorized repairs are not defects.

Email support@nioksstil.com with subject Return Request – [Order Number] or Warranty Claim – [Order Number]. Include the order number, product name, whether this is a convenience return or a defect, and photos or a video of the device, seal, serial label, and accessories. After-sales requests require photos or a video. Add carton photos or a video for arrival damage.

Do not ship until we send an RMA and a return address. Unauthorized parcels may be refused or sent back at your expense.

We inspect authorized returns within 5 business days of receipt. Approved refunds go to the original payment method within 5–10 business days after approval. Your bank may take longer to post the credit. An RMA is permission to send the item back, not a promise that a refund will be paid.

If you email us before the order is handed to the carrier, we cancel and refund the amount we captured, including shipping. After the carrier has the parcel, the order is a return, not a cancellation.

Refused, unclaimed, or undeliverable parcels may come back to us. We may deduct outbound shipping, the carrier’s return charge, and a reasonable restocking cost if the carton is no longer sellable as new.

Contact us before a chargeback. If a chargeback is already open, we may stop a duplicate Shopify refund so the same amount is not paid twice.