Nasal Wash Kits — Not a Toiletry Item, but a Medical Device Since 2018

Key takeaway — Nasal wash kits and their saline powder were not always medical devices. A revision effective October 31, 2018 created manual nasal wash kit and powered nasal wash kit as medical device items under the MFDS product-classification notification. Before that, there was no item to place this product form under, so it often circulated like a toiletry or general consumer good. The manual kit is confirmed as a notification (Class 1) item on products actually on the market; the powered kit is a separate item whose class needs individual confirmation. Compiled as of September 2026.

Why revisit nasal wash kits

Nasal wash kits sell well every allergy season. Rinsing the nasal cavity with saline doesn't look risky, so it's easy for a seller to treat it as "just another toiletry item."

But this item changed identity once, in 2018. Before that, there was no medical device item to place this product form under, so it circulated in something close to a regulatory gap. After the item was created, it became subject to notification and management. The first thing to check is whether the product you're selling now falls under that item.

2018 — from general consumer good to medical device

MFDS revised the "Regulation on Medical Device Items and Class-by-Item Designation" in 2018, creating several new items that needed stronger safety oversight. Two nose-related items were among them.

• Manual nasal wash kit
• Powered nasal wash kit

The revision took effect on October 31, 2018. Before that date, there was no dedicated medical device item for products in this form, which is why many such products circulated like toiletries or general goods.

The implication for sellers is simple: the sense that "a nasal wash kit is just a toiletry" is a pre-2018 read. If you're sourcing a new product in this form now, don't carry that assumption over.

It's not just the device — the saline powder is a medical device too

One more thing was settled in the same revision: the saline powder used with the nasal wash kit.

Sodium chloride powder meeting the Korean Pharmacopoeia or an equivalent standard, made for use with a nasal wash kit, also became subject to medical-device management under the same revision. Product descriptions for kits actually on the market use exactly this phrasing — "sodium chloride powder meeting the Korean Pharmacopoeia or an equivalent standard."

That opens the door to a specific mistake: registering the device but overlooking the powder. If you sell them as a set, work from the premise that both the device and the powder are medical device items.

Manual vs. powered — the procedures diverge

Having two separate items means two separate procedures.

The manual nasal wash kit is confirmed, on product listings actually on the market, to carry the label "medical device notification item." That means it's a notification item — a hallmark of Class 1 procedure, where a notification form is filed and accepted without a technical-document review.

The powered nasal wash kit is confirmed to exist as a separate item. What could not be confirmed from a primary source as of when this guide was compiled is its class. Powered variants are often classified higher than manual ones across many product families, but that pattern was not assumed to apply here without confirmation.

If you're preparing a powered kit, the safer starting point is an official product-classification confirmation through MFDS, before you request quotes. How to do that is covered in How to Check Your Product's Classification and Class.

Where this item actually gets flagged — advertising

A real violation pattern has been flagged for this item: advertising unapproved therapeutic claims such as "treats sinusitis" or "treats allergic rhinitis."

The structure behind why this gets flagged is straightforward. The notified or certified intended use of a nasal wash kit is nasal irrigation — not treating a disease. There's a gap between "washes out the nose" and "cures sinusitis," and crossing that gap raises a misleading-advertising issue.

Labeling and advertising for a medical device is only permitted within the scope of the notified or certified intended use. If wording beyond that scope appears anywhere — the listing, reviews, or search keywords — the same issue arises. The advertising boundary for a registered medical device is covered further in What You Can and Can't Say on a Listing Page.

Three steps for sellers to check

You can do these before signing a contract.

Step 1 — Confirm the form. Is it hand-squeezed (manual) or does it use a powered pump (powered)? This distinction determines the procedure.

Step 2 — List the components. Are you selling just the device, or the saline powder along with it? If the powder is included, it needs to be confirmed as a medical device item too.

Step 3 — Check the claimed wording against the boundary. Does your listing copy stay at "irrigation/washing," or does it cross into "treats/relieves"? If the latter, confirm whether that wording falls within the notified or certified intended use.

Common mistakes

• Distributing a nasal wash kit without registration, on the assumption it's a toiletry or general consumer good
• Notifying the device but never separately confirming the saline powder sold alongside it
• Assuming a powered kit follows the same procedure as a manual kit
• Advertising efficacy beyond the notified or certified scope, such as "treats sinusitis" or "treats rhinitis"
• Bringing in a foreign manufacturer's product as-is without checking that Korea created a dedicated item for this form

Checklist before proceeding

• Confirm whether the product is manual or powered
• Check whether saline powder is sold alongside it — if so, confirm the powder as a separate item too
• If manual, prepare for the notification procedure (no technical-document review)
• If powered, get an official MFDS product-classification confirmation first
• Align listing copy to "irrigation/washing" and check for any treatment or relief claims
• Confirm whether a sales-business notification is required

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A nasal wash kit is a simple product, but it carries a history of a classification change, so "the way it used to be" doesn't hold anymore. Just tell us whether your product is manual or powered, and whether you sell the saline powder with it, and we'll confirm which procedure applies via a free preliminary review.

Source: A revision to the "Regulation on Medical Device Items and Class-by-Item Designation," effective October 31, 2018, created the manual nasal wash kit, the powered nasal wash kit, and sodium chloride powder for nasal wash kits as medical device items (related coverage: Hit News, 2018). Whether the manual nasal wash kit is a notification item was confirmed from the labeling on product listings actually on the market. The general structure of notification and certification procedures follows the Medical Devices Act (Act No. 21263, effective July 1, 2026) and its Enforcement Rule. Item definitions and classes can change with notification revisions, and in particular the class of the powered nasal wash kit could not be confirmed from a primary source in this guide — please obtain an official MFDS product-classification confirmation before proceeding.