Master Patch Clear Fit
An ultra-thin hydrocolloid patch with a matte, gradient edge made to disappear in daylight, applied to clean, dry skin and left in place overnight or under makeup.
No reviews yet18ea
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- NormalCombinationDry
- Helps with
- Shoppers who want the full Master Patch Clear Fit assembled as one purchase instead of sourcing each item on its ownConsistent use across every piece in the set, since a multi-step routine compounds over weeks of use rather than showing a result from one application
Sold out.
Tell us where to send it
One email, the moment this exact unit is back in stock. Not a newsletter and not a sequence, and your address comes off the list the second it is sent.
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
A patch worn in daylight has a second job: it has to disappear. This is the thin, matte cut in COSRX's Master Patch range, made to sit under makeup rather than visibly on top of the skin. It goes on once the morning routine has absorbed and before makeup, on skin that is completely dry. The dressing still works the way any hydrocolloid does, taking up what the spot gives off while keeping hands off it. One patch per spot, replaced after several hours.
Key benefits
- A matte polyurethane film with gradient edges that blend into skin
- Hydrocolloid absorbs fluid and cushions the spot through the day
- Thin enough to wear under makeup without a visible ridge
- Keeps hands and grime off the blemish while it settles
Inside the formula
Inside the formula
COSRX Master Patch Clear Fit
What is different about the Clear Fit compared to other Master Patch options?
This patch shares the same seven-ingredient material, cellulose gum, styrene isoprene styrene block copolymer, polyisobutylene, petroleum resin, liquid paraffin and tetrakis methane, as the Original Fit, but polyurethane film is named first here rather than fifth. That ordering points to a thinner, more film-forward construction, matching its ultra-thin, near-transparent finish. It ships eighteen to a box, still working as a plain absorbent dressing.
Will this thinner patch still work on skin that's easily irritated?
Fragrance, essential oil, denatured alcohol, silicone, parabens, sulfate surfactants, mineral oil and added colourant are all absent from the ingredient list, exactly as with the rest of the line. The film relies on petroleum resin, liquid paraffin and polyurethane film for its structure rather than any treatment ingredient, so there's nothing added here beyond the dressing structure itself. Adhesive sensitivity, not an active ingredient, is the main thing to watch for.
Does the thinner film absorb fluid as well as a thicker patch?
Cellulose gum is the same absorbent ingredient doing the work here as in the thicker Master Patch versions, drawing fluid from the spot and turning visibly white or cloudy as it fills. A thinner film changes how visible the patch is under makeup, not how the absorption itself happens. Watching for that color change, rather than the patch's thickness, is still the sign to replace it.
Can I wear makeup over this patch during the day?
The near-transparent, matte film is built to sit under makeup, since nothing in the seven-ingredient list is a treatment serum that would need to absorb into skin first. Applying makeup once the patch is pressed down firmly at the edges is the straightforward order here, rather than trying to work makeup underneath the film itself.
How can I tell my Clear Fit patches are genuine COSRX?
The EAN 8809598455733 on the box matches directly against your own unit as a first check. Beyond that, COSRX verifies units itself: the batch number and expiration date printed on your box can be entered on the verification page at cosrx.com. Checking those two codes against your own packaging is the actual verification, not the barcode alone.
Full INCI (7): Polyurethane Film, Cellulose Gum, Styrene Isoprene Styrene Block Copolymer, Polyisobutylene, Petroleum Resin, Liquid Paraffin, Tetrakis Methane
Ingredient list read from jolse.com on 9 September 2026.
7 of 7 explained
- Polyurethane Film film former
- Polyurethane Film is the thin backing sheet of a patch. It holds the hydrocolloid mass in place and keeps the outside dry while the side against skin stays sealed.
- Cellulose Gum thickener
- Cellulose Gum is plant cellulose modified to dissolve in water. It thickens, holds particles in suspension and gives a smooth, slippery body.
- Styrene Isoprene Styrene Block Copolymer film former
- This is the rubbery backbone of a pressure-sensitive adhesive. It is what lets a patch sit on a curved surface for hours and still peel away in one piece.
- Polyisobutylene film former
- Polyisobutene is a synthetic polymer that forms a flexible, water-resistant film. It gives gloss and holds a formula in place, which is why it appears in lip products and long-wear textures.
- Petroleum Resin film former
- Petroleum Resin is a tackifier: it is what gives a hydrocolloid patch its grip on skin without a wet adhesive. It is inert and stays on the surface.
- Liquid Paraffin occlusive
- Liquid Paraffin is highly refined mineral oil. It is among the least reactive occlusives in cosmetics: it stays on the surface, slows water loss, and carries nothing into skin.
- Tetrakis Methane antioxidant
- This is a stabiliser that keeps the oils and fragrance in a formula from oxidising. Its job is the shelf life of the product rather than any effect on skin.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809598455733
- Made in
- Republic of Korea
- Volume
- 18ea
- Category
- Hydrocolloid Blemish Patch
- Actives
- Hydrocolloid film
- Ships from
- California or Korea
Orders ship from California or direct from Korea with tracked delivery to your door, and both routes carry the same Korean-market release. Shipping is free on orders of $100 or more. Returns are accepted for 30 days, by mail.
We split shipments free, so one out-of-stock item never holds up the rest of your order.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Barcode
Listed against the Korean barcode on its box - 3California or Korea
Ships to you from either, as the same Korean-market release
We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name. The barcode in the specification above is the Korean-market one and it is printed on the box you receive.
Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.
Every order ships from California or direct from Korea, and returns run for 30 days.
Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.
How to use
- Press one Master Patch Clear Fit onto clean, dry skin once your morning routine has absorbed.
- Press it flat from the middle out, then put makeup over the top of it if you want to.
- It goes on before makeup and comes off with it; skincare goes underneath, never over.
- Replace it after several hours. Do not put one over sunscreen or moisturizer that is still wet; it will not hold.
Reviews
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COSRX Master Patch Clear Fit
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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COSRX, Korean-market original
Ultra-thin daytime hydrocolloid patches, 18 ea, matte finish.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.
Source: COSRX FAQ
On the unit itself
- The Korean-market barcode, unaltered from the retail package.
- The manufacturer’s batch code, exactly as the maker printed it.
정품Genuine article, Korean-market stock
What professionals say
What professionals say
What skin-care professionals say about skin care, quoted from the medical sources linked beside each.
Your skin barrier is basically your outer layer of the skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Pretty much every step of a Korean skin care routine is going to have some component of hydration.
Alok Vij, MDDermatologist, Cleveland Clinic
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