5 Korean Glutathione Ampoules — Ingredient Counts from 21 to 47, and Where the Stinging Starts
In one line: “Glutathione ampoule” is a market term for ampoules that lead with glutathione; to claim “whitening,” each product must pass functional cosmetics examination or notification with Korea’s MFDS.
In this article
- Reviews in this category carry a stinging tag
- Ingredient counts range from 21 to 47
- Side-by-side comparison of all 5 products
- How to check what double functional actually means
- One spelling difference splits your search results
- Where the reviews split
- Which product fits which situation
- We looked up the MFDS functional cosmetics registry ourselves
- What this article cannot tell you
- How to verify everything yourself
Reviews in this category carry a stinging tag
When choosing a glutathione ampoule, most people look at concentration or functional labeling first. But the reason people actually stop using one is, more often, irritation.
The public review tags on Hwahae reveal the character of this category.
| Product | Total ingredients | Top positive tags | Top negative tags |
|---|---|---|---|
| numbuzin No.5 Glutathione C Blemish-Mark Ampoule | 47 | ”absorbs well” 177 · “non-irritating” 176 | ”sticky” 83 · “stinging” 52 · “causes allergic reactions” 37 |
| Round Lab Pro Glutathione 5 Boosting Shot Ampoule | 21 | ”not sticky” 5 · “non-irritating” 5 | None tallied (16 reviews) |
| Genabelle Glutathione Vita Glow Spicule Shot | 29 | ”pore care” 1 · “improves skin tone” 1 | None tallied (1 review) |
The same product carries “non-irritating” 176 times and “stinging” 52 times. That is not a contradiction — it means results split from person to person.
With review counts of 975, 16, and 1, the tag counts cannot be compared head to head. Still, one thing worth knowing up front about this category: once reviews accumulate, an irritation tag reliably appears.
Ingredient counts range from 21 to 47
An ingredient count alone says nothing about quality. But the difficulty of tracing the cause of a reaction genuinely differs.
Round Lab 21 ─────────
Genabelle 29 ───────────────
numbuzin 47 ────────────────────────────────A longer list also means supporting ingredients for hydration, texture, and scent. The 83 “sticky” tags on numbuzin’s reviews are not unrelated to that design. Conversely, fewer ingredients make for a simpler feel — a Round Lab review describes the scent as simply “completely fragrance-free.” But the same review also says “it leaves a slick, slightly tacky finish” and “would not repurchase,” so a short list does not mean a nicer feel.
All three products are labeled “Free” of both the 20 cautionary ingredients and allergy-caution ingredients on Hwahae. A difference in count is not a difference in safety.
Side-by-side comparison of all 5 products
The order of listing implies no ranking. This is not a ranked list.
| Product | Brand | Volume | List price (sale price) | Hwahae category ranking | Rating · reviews |
|---|---|---|---|---|---|
| Glutathione Vita Glow Spicule Shot | Genabelle | 30ml | ₩49,000 (₩45,000) | No ranking shown | 5.00 · 1 |
| No.5 Glutathione C Blemish-Mark Ampoule | numbuzin | 30ml | ₩28,000 (₩22,400) | Hwahae ampoule/brightening #6 | 4.32 · 975 |
| Pro Glutathione 5 Boosting Shot Ampoule | Round Lab | 10ml | ₩45,000 (₩29,900, bundle with refill) | No ranking shown | 4.81 · 16 |
| Bio Intense Glutathione White Ampoule | Medi-Peel | 30ml | ₩38,000 (₩22,800) | Not verified | 4.44 · 16 |
| Glutathione Ampoule Shot | Maxclinic | 50ml | ₩48,000 (₩45,600) | Not on Hwahae | Not verified |
Ingredient flags can be verified on the same yardstick for the three products registered on Hwahae.
| Product | Total ingredients | Cautionary ingredients | Allergy-caution ingredients | Whitening functional ingredients | Wrinkle functional ingredients |
|---|---|---|---|---|---|
| Genabelle Glutathione Vita Glow Spicule Shot | 29 | Free | Free | 2 | 1 |
| numbuzin No.5 Glutathione C Blemish-Mark Ampoule | 47 | Free | Free | 3 | 1 |
| Round Lab Pro Glutathione 5 Boosting Shot Ampoule | 21 | Free | Free | 1 | 1 |
| Medi-Peel Bio Intense Glutathione White Ampoule | Not verified | Not verified | Not verified | Not verified | Not verified |
| Maxclinic Glutathione Ampoule Shot | Not verified | Not verified | Not verified | Not verified | Not verified |
Medi-Peel and Maxclinic either blocked queries or are not registered on Hwahae, so ingredient details could not be verified. No data means no data — not that the product is bad.
How to check what double functional actually means
If a brand only writes “double functional” or “triple functional,” consumers cannot tell what actually passed review. Find the officially listed ingredients in the full ingredient list and it becomes clear immediately.
For Genabelle Glutathione Vita Glow Spicule Shot, the detail page names two ingredients.
| Ingredient | Class | MFDS functional listing |
|---|---|---|
| Ethyl Ascorbyl Ether | Vitamin C derivative | Whitening |
| Tocopherol | Vitamin E | Wrinkle improvement |
So this product’s “double functional” means whitening + wrinkle improvement. Hwahae likewise shows 2 whitening functional ingredients and 1 wrinkle-improvement functional ingredient for this product, consistent with the labeling.
The same method works for other products. numbuzin has 3 whitening functional ingredients — the most on this list — and its product page states “functional cosmetics examination (or notification) completed under the Cosmetics Act” and publishes the full ingredient list as text.
One spelling difference splits your search results
This category has one more labeling quirk — in Korean, glutathione is transliterated two ways.
글루타치온 ("-chion") ← Genabelle ampoule · numbuzin · Round Lab · Medi-Peel · Maxclinic
글루타티온 ("-tion") ← the mask product Genabelle registered on HwahaeThe spellings mix even within one brand. Korean shopping searches group by the characters in the product name, so searching with one spelling hides products using the other. If you cannot find a product, switch the spelling and search again.
Where the reviews split
Quoted directly from public Hwahae reviews.
numbuzin No.5 Glutathione C Blemish-Mark Ampoule (Teens · oily · acne-prone)
“Maybe a slight effect on marks? A bit hydrating, but just okay. Maybe vitamin-type ingredients don’t suit me, but I broke out a lot after using it and my face gets so sticky after; just so-so for oily skin”
numbuzin No.5 Glutathione C Blemish-Mark Ampoule (30s · combination · sensitive)
“Spreads and absorbs well. It’s 5% niacinamide so it should be good used consistently. The shea butter, which can clog pores, bothers me a little.”
Round Lab Pro Glutathione 5 Boosting Shot Ampoule (30s · combination · sensitive · acne-prone)
“Texture | slightly runny, moderate viscosity… Scent | completely fragrance-free… it leaves a slick, slightly tacky finish, so pairing with the next skincare step matters; I mostly use it for night care… would not repurchase. Did the container really have to be syringe-shaped..? And the volume is small, so it runs out fast.”
Genabelle Glutathione Vita Glow Spicule Shot (30s · combination)
“Skin tone improved, brightness improved, pores tighter — overall brighter… The product is good so I keep using it, but …compared to the product, the sales and marketing presence is disappointing, which is why I’m mentioning it”
Genabelle has only one review, and half of it is about shipping and customer service. The 5.00 rating comes from a sample of one and must not be taken at face value.
Which product fits which situation
| If this is you | Look at first | Why |
|---|---|---|
| You are sensitive to irritation | This table cannot pick for you | Only numbuzin has irritation tags tallied — “stinging” 52/975 = 5.3%, “causes allergic reactions” 37/975 = 3.8%. Round Lab (16 reviews) and Genabelle (1 review) have no tallies, which does not mean gentler — it means not yet knowable |
| You want to narrow down the cause if you react | Round Lab, 21 · Genabelle, 29 | numbuzin 47 — ingredient count is not the strength of irritation but the number of suspects. All three are Free of cautionary and allergy-caution ingredients |
| You want a large review base to read | numbuzin, 975 | The rest have 16 or fewer — of the three products on Hwahae, only one has accumulated real-use data. Medi-Peel and Maxclinic are not on Hwahae, so they could not enter this comparison |
| You want more whitening functional ingredients | numbuzin, 3 | Genabelle 2 · Round Lab 1 |
| You want to know what “double functional” is | Genabelle | Ethyl Ascorbyl Ether (whitening) and tocopherol (wrinkle improvement) can be confirmed directly in the ingredient list |
| You want to read ingredients and cautions before buying | numbuzin | Publishes the full ingredient list and examination status as text on the product page |
| You want a small size to try first | Round Lab 10ml | A bundle with a refill exists |
| You want a big bottle that lasts | Maxclinic 50ml | |
| You want to build a routine within one line | Medi-Peel | Toner, cream, and sun serum share the line |
| You want to try a spicule format | Genabelle | Within what we checked (official stores plus Hwahae), the only product labeled as a spicule format · mild-irritation notice included |
We looked up the MFDS functional cosmetics registry ourselves
Above, we pinned down what “double functional” means from the ingredient list. The MFDS registry confirms it. As queried on August 12, 2026.
| Product | Type | Number | Completed | Registered efficacy |
|---|---|---|---|---|
| Genabelle Glutathione Vita Glow Spicule Shot | Notification | 2024021042 | 2024-06-11 | Whitening · wrinkle improvement |
| numbuzin Glutathione C Blemish-Mark Ampoule | Notification | 2023024611 | 2023-06-13 | Whitening · wrinkle improvement |
| Round Lab Pro Glutathione 5 Boosting Shot Ampoule | Notification | 2026001226 | 2026-01-09 | Whitening · wrinkle improvement |
| Medi-Peel · Maxclinic | Could not query | — | — | Could not pinpoint the registered item name |
Genabelle’s “double functional” labeling matches the registry. The detail page’s Ethyl Ascorbyl Ether (whitening) and tocopherol (wrinkle improvement), Hwahae’s functional ingredient counts, and the MFDS registry entries — all three point to the same answer.
But all three verified products are the same. All are registered for whitening and wrinkle improvement, so “double functional” is not a differentiator in this category. Whether it is printed on the front differs; the regulatory substance does not.
All three are “notifications,” not “examinations.” That means officially listed ingredients used at listed concentrations — it does not mean weaker efficacy.
What this article cannot tell you
Ingredient counts and review tags are useful only for narrowing down candidates.
- Whether it suits your skin — the same product carries “non-irritating” 176 times and “stinging” 52 times. Most people being fine does not mean you will be
- Whether tag counts can be compared across products — with review totals of 975 vs 1, counts scale with totals. Correct to percentages before reading
- Whether fewer ingredients means gentler — count and irritation are not directly linked. What is in the formula matters more
- How long you would need to use it — not a question a product can answer
If you have reacted to a specific ingredient before, searching for its name in the full ingredient list is faster than reading reviews.
How to verify everything yourself
Every number in this article can be re-checked at public sources. These were applied identically to all five products.
| What | Where |
|---|---|
| Whitening/wrinkle functional examination/notification status | MFDS Nedrug — functional cosmetics product info (notifications) · (examinations) — search by product or company name. Examinations and notifications are separate menus, so check both |
| Full ingredients · cautionary flags · functional ingredient counts · review tags | The “Reviews/Ingredients” tab on each Hwahae product page |
| Disclosed concentrations · format descriptions | Each brand’s official store detail pages |
Official stores we could verify — Genabelle · numbuzin · Round Lab · Maxclinic. Medi-Peel could not be automatically queried and was not verified.
Other articles organized by the same standards:
- 5 melasma ampoules compared — five conditions for reading human application test numbers
- 6 PDRN ampoules compared — the same ampoule format compared along a different ingredient axis. Larger samples there make review-tag percentages more readable than in this article
- 5 regeneration creams compared — split by the most-cited complaint, “heavy”
- 5 tone-up sunscreens compared — split by three failure modes: white cast, pilling, dryness
- 5 derma cosmetics compared — distribution channels and ingredient-safety flags
Written by the kbeautyguide editorial team · First published 2026-08-12 · Last verified 2026-08-12 · Update cadence re-checked quarterly
※ Prices, ratings, review counts, rankings, and availability change frequently — please verify directly with the seller before purchasing. Review tag counts are Hwahae’s published review analytics; they grow with total review counts, so do not compare products by absolute numbers. Ingredient counts and functional ingredient counts are criteria for narrowing candidates only, not for judging a product’s effectiveness or safety, and passing functional review does not guarantee any particular result for an individual. No ranking has been assigned; the order of listing implies no superiority. This article is for general information purposes only and does not substitute for medical diagnosis or a recommendation of any specific product or medical institution. If you have pigmentation concerns or a skin condition, please consult a medical professional.
FAQ
Why do people say brightening ampoules sting?
Because the more ingredients a formula contains, the more chances there are for your skin to react. On this list, numbuzin No.5 Glutathione C Blemish-Mark Ampoule has 47 total ingredients and 3 whitening functional ingredients, with 52 "stinging" and 37 "causes allergic reactions" tags on Hwahae (a Korean cosmetics review platform). By contrast, Round Lab Pro Glutathione 5 Boosting Shot Ampoule, with 21 ingredients, has no negative tags tallied yet. The review counts differ greatly (975 vs 16), so a direct comparison is not fair — the safe reading is that a shorter list makes it easier to trace the cause if a reaction occurs.
What does "double functional" mean — which two functions?
For Genabelle Glutathione Vita Glow Spicule Shot, it is whitening plus wrinkle improvement. The detail page states that it contains Ethyl Ascorbyl Ether (a vitamin C derivative) and tocopherol (vitamin E), and these are officially listed by Korea's MFDS as whitening and wrinkle-improvement functional ingredients respectively. Hwahae likewise shows 2 whitening functional ingredients and 1 wrinkle functional ingredient for this product. If a brand only writes "double functional" without saying which two, checking the officially listed ingredients in the full ingredient list yourself is the accurate way.
What is a spicule?
A needle-shaped raw material. Genabelle Glutathione Vita Glow Spicule Shot states that it contains highly purified spicules at 1,000ppm, and its English product name includes Glutathione Hydrolyzed Sponge. The brand explains that this material helps active ingredients absorb into skin, and also notes that mild irritation can occur. It is the only product on this list labeled as a spicule format — if you are sensitive to irritation, check this point first.
Which Korean spelling is correct — 글루타치온 or 글루타티온?
Both are used. The English word glutathione gets transliterated into Korean two ways, and the spellings coexist — Genabelle itself uses one spelling (글루타치온) on its ampoule and the other (글루타티온) on a mask product it registered on Hwahae, so they mix even within one brand. Korean shopping searches match the characters in the product name, so searching with only one spelling hides products using the other. If you cannot find a product, switch the spelling and search again.
How do I compare a 10ml product with a 50ml one?
Converting to price per unit volume makes it easier. On this list, Round Lab Pro Glutathione 5 Boosting Shot Ampoule is 10ml while Maxclinic Glutathione Ampoule Shot is 50ml — a fivefold difference. But the amount used per application varies by product, and the Round Lab reviews mention "runs out quickly because the volume is small" alongside a usability gripe, "did the container really have to be syringe-shaped?" Look at container design and directions for daily use, not volume alone, to gauge how long a bottle will actually last.
Can I check functional status myself?
Yes — Nedrug, run by Korea's Ministry of Food and Drug Safety, lets you query functional cosmetics examinations and notifications by product name or manufacturer/distributor name. Even when a brand writes "whitening functional" or "double functional," querying the registry yourself is the reliable check. Hwahae product pages also display counts of whitening and wrinkle-improvement functional ingredients, so checking both places lets you confirm the basis of the claims.