Clear Fit Master Patch
Clear Fit Master Patch
Product Description
The COSRX Clear Fit Master Patch is an ultra-thin, semi-transparent hydrocolloid spot patch built for invisible daytime wear. At just 0.12โ0.14mm thick with a matte gradient edge, it disappears into skin and sits flawlessly under makeup while absorbing exudate, shielding the blemish from bacteria and stopping you from picking. A fragrance-free, single-size (10mm) everyday patch from K-beauty bestseller COSRX.
โจ Texture & Feel
Truly Invisible
A gradient, matte edge and 0.12mm profile blur into skin tone, so it stays unnoticeable even in daylight or under foundation.
Absorbs Gunk Fast
Medical-grade hydrocolloid draws out fluid and pus from whiteheads, turning opaque white when the work is done.
Protective Barrier
Forms an airtight seal that blocks bacteria, dirt and outside irritants while preventing you from touching or picking.
Makeup-Friendly
Designed for daytime wear โ you can layer makeup gently on top without the patch lifting or peeling at the edges.
๐ก๏ธ Safety & Compatibility
No retinoids, salicylic acid, hydroquinone or chemical sunscreens. It is a purely physical hydrocolloid dressing with no actives absorbed into the body.
Contains no fatty acids, esters, polysorbates or ferments that feed malassezia. Mineral oil and the polymer adhesives do not trigger fungal acne.
As a surface patch it sits on top of the blemish rather than penetrating pores; rated very low at 1/5 for pore-clogging risk.
No added fragrance, alcohol, parabens, silicones or sulfates. COSRX markets these as suitable for sensitive, reactive skin.
Compatible alongside retinol, vitamin C, AHA/BHA โ just apply the patch to a clean, dry, product-free spot for best adhesion.
Hydrocolloid needs fluid to absorb. It does little for closed, deep or cystic pimples that have not come to a head.
๐ฌ Ingredient Breakdown
๐งฝ Cellulose Gum Core Absorbent Proven
The water-loving heart of the hydrocolloid system. This plant-derived polymer (carboxymethylcellulose) swells as it draws fluid out of the blemish, which is why the patch turns cloudy white as it works.
- Function: Emulsion stabilizer and absorbent gelling agent that pulls exudate from the spot.
- Safety: Considered hypoallergenic and non-toxic; widely used in cosmetics, food and medical dressings.
๐๏ธ Polyurethane Film (Polyurethane-4) Backing Layer Proven
The thin, flexible, semi-transparent top layer that gives the patch its barely-there 0.12mm profile. It seals the spot from the outside world while flexing with facial movement.
- Function: Breathable film-forming backing that protects the wound and blocks bacteria and dirt.
- Safety: Inert, non-absorbed polymer commonly used in medical wound dressings.
๐ Styrene/Isoprene Copolymer Adhesive Proven
A rubbery thermoplastic elastomer that gives the patch its strong yet gentle skin grip, helping it stay sealed for several hours of daytime wear.
- Function: Pressure-sensitive adhesive base that keeps the patch flush against skin.
- Safety: Non-absorbed structural polymer; not a known irritant in patch form.
๐งท Polyisobutene Binder Proven
A synthetic film-forming polymer that binds the adhesive matrix together and improves how cleanly the patch peels off without pulling at skin.
- Function: Film former and binding agent for the adhesive layer.
- Safety: Not absorbed by the skin; commonly used as a tackifier in patches and balms.
๐ชจ Hydrogenated Petroleum Resin (Red Petrolatum) Tackifier Proven
A resin that boosts the stickiness and seal of the adhesive system so the patch holds firm against sweat and movement throughout the day.
- Function: Tackifying / occlusive component that strengthens the airtight seal.
- Safety: Inert structural ingredient that stays on the surface of the patch.
๐ง Paraffinum Liquidum (Mineral Oil) Emollient Proven
Highly refined mineral oil that plasticizes the patch and creates an occlusive layer, locking moisture in around the blemish for a softer, calmer heal.
- Function: Emollient and occlusive that traps hydration and keeps the dressing pliable.
- Safety: Comedogenicity 0โ2, irritancy 0; the scientific consensus is that cosmetic-grade mineral oil is safe and non-irritating.
๐ฟ Tetrahydrodiferuloylmethane (Tetrahydrocurcumin) Antioxidant Promising
A colorless derivative of curcumin (from turmeric) included as an antioxidant to help shield the blemish area from free-radical damage during healing.
- Function: Antioxidant that helps defend skin against oxidative stress.
- Note: This name does not follow the strict INCI standard, but the ingredient is recognized as a turmeric-derived antioxidant.
7 ingredients
Polyurethane Film, Cellulose Gum, Styrene/Isoprene Copolymer, Polyisobutene, Hydrogenated Petroleum Resin, Paraffinum Liquidum, Tetrahydrodiferuloylmethane.
๐ Where It Fits in Your Routine
Apply directly onto clean, dry skin before any leave-on products so it adheres firmly, then carry on with the rest of your routine and makeup around it.
๐ How to Use
Cleanse & Dry
Wash the blemish and surrounding area, then make sure the skin is completely dry. Do not apply skincare to the spot first.
Peel & Place
Lift one patch from the film and press it directly over the blemish so it fully covers the spot.
Wear All Day
Leave on for up to about 8 hours. Apply the rest of your skincare and makeup gently around it.
Replace When White
Swap for a fresh patch once it turns opaque white or stops adhering firmly. Repeat until the blemish settles.
๐ค Who Is It For?
โ Perfect for you if:
- You want an invisible spot patch to wear during the day or under makeup
- You're a chronic picker who needs a physical barrier over blemishes
- You get whiteheads or surfaced pimples that need oozing fluid absorbed
- You have sensitive or fragrance-sensitive skin
- You want a low-cost, fuss-free, single-step treatment
โ Consider alternatives if:
- You mostly battle deep cystic or under-the-skin blemishes with no head
- You need an actives-loaded patch with salicylic acid or tea tree oil
- You want multiple patch sizes for larger spots (this is one 10mm size)
- You're treating widespread acne rather than the occasional spot
- You want overnight thickness โ try the Acne Pimple Master Patch instead
๐ฏ Skin Type Compatibility
Absorbs oil and exudate, and the matte finish helps it stay put even on shinier skin.
Non-comedogenic and fungal-acne safe; ideal for spot-treating surfaced breakouts.
Targets individual spots without affecting the rest of your routine across zones.
Fragrance-free and hypoallergenic, though very reactive skin should patch test the adhesive first.
Works fine on dry skin but is most effective on spots that are actively weeping fluid.
๐ Results Timeline
Protected & Concealed
The spot is instantly covered, shielded from bacteria and your fingers, and visually flattened under the matte patch.
95% noticedFluid Absorbed
The patch turns opaque white as it draws out exudate, and the blemish typically looks smaller and less angry.
80% noticedVisibly Calmer
With consistent patch swaps, redness and swelling on surfaced pimples noticeably subside and healing speeds up.
70% noticedReduced Scarring
By discouraging picking and keeping the area moist and clean, the patch helps minimize the risk of post-acne marks.
60% noticedโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Genuinely thin and nearly invisible, even in daylight
- Strong, reliable adhesion that lasts all day
- Wears well under makeup without lifting
- Fragrance-free and gentle for most users
- Affordable and a long-time COSRX bestseller
- Stops picking and visibly shrinks surfaced spots fast
โ Criticized
- Only 18 patches per pack feels limited for the price
- Single 10mm size doesn't suit larger blemishes
- Not very effective on deep, headless cystic spots
- Edges can still catch the light under sheer makeup
- Rare reports of adhesive irritation on reactive skin
๐ฐ Budget-Friendly Alternatives (Dupes)
Drugstore hydrocolloid patches in assorted sizes. Same fluid-absorbing tech but thicker and more visible, so better for nighttime than under makeup.
Very affordable hydrocolloid spot dots widely available in drugstores. Effective basics, but less refined and noticeably thicker than the Clear Fit.
Thin, near-invisible daytime patches at a similar concept and price-per-pack. Comparable wear, with multiple sizes in the pack.
๐ Comparison with Competitors
COSRX Clear Fit Master Patch (Featured)
~$6.00Hero Mighty Patch Invisible+
~$14.00COSRX Acne Pimple Master Patch
~$6.00Starface Hydro-Star
~$9.78๐ฆ Storage & Shelf Life
Use within 12 months of opening the pouch; check the printed expiry date on the package.
Store in a cool, dry place away from direct sunlight and humidity. Keep the pouch sealed between uses.
Flat resealable pouch with patches on a peel-off plastic film backing.
Yes โ lightweight, flat, non-liquid and TSA-friendly for carry-on.
โ Frequently Asked Questions
Yes. It contains no retinoids, salicylic acid, hydroquinone or chemical sunscreens โ it's a purely physical hydrocolloid dressing with no actives absorbed into the body, which makes it one of the safest acne tools during pregnancy and breastfeeding. As always, check with your doctor if you have concerns.
Yes. The formula has no fatty acids, esters, polysorbates, oils or ferments that feed malassezia yeast. The mineral oil and polymer adhesives used here do not trigger fungal acne, so it's considered fungal-acne safe.
Yes. Since it's an inert physical patch, there are no ingredient conflicts. Just apply it to clean, dry skin before your other products so it sticks well, then use your retinol, vitamin C or exfoliating acids around the patch as usual.
It suits all skin types but shines for oily, combination and acne-prone skin dealing with surfaced whiteheads. It's fragrance-free and generally gentle for sensitive skin, though very reactive skin should patch-test the adhesive first.
You'll see immediate protection and a flatter, concealed spot the moment you apply it. After 6โ8 hours the patch turns white as it absorbs fluid, and surfaced pimples often look calmer within 1โ2 days of consistent use.
Apply it first, onto freshly cleansed and fully dry skin, before any leave-on products. Then layer your toner, serum, moisturizer, SPF and makeup gently around it. This order gives the best adhesion and longest wear.
No. With a comedogenic rating of about 1/5, it's considered non-comedogenic. It sits on the surface of the blemish rather than soaking into pores, and actually helps clear the spot rather than clog it.
Use within about 12 months of opening the pouch and before the printed expiry date. Keep the pouch sealed and stored in a cool, dry place to maintain adhesion and hygiene.
Verdict: The COSRX Clear Fit Master Patch is one of the best invisible daytime spot patches you can buy. Its ultra-thin, matte, fragrance-free hydrocolloid disappears under makeup, sticks reliably all day and is pregnancy- and fungal-acne safe. The trade-offs are real but minor โ just 18 patches in a single 10mm size, and limited power against deep cystic spots. For surfaced whiteheads and everyday discreet wear, it's an affordable, dermatologist-friendly staple that earns its bestseller status.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging ยซpromisesยป it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 0 |
Polyurethane-4
|
|
|
| 1 |
Cellulose Gum
Masking, Fragrance, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Binding Agent, Binding, Film Forming
|
|
|
| 1 |
Styrene/Isoprene Copolymer
Film Forming, Opacifying
|
|
|
| 1 |
Polyisobutene
Viscosity Controlling, Viscosity Increasing Agent, Binding Agent, Binding, Film Forming
|
|
|
| 0 |
Red Petrolatum
Emollient, Moisturising, Uv Absorber
|
|

