4th on the list, which puts it at an estimated 2–10% of the formula.
Paraffin oils. Liquid hydrocarbons from petroleum
Hydration
COSRX
Master Patch Original Fit
face patch
COSRX
Master Patch Original Fit
face patch
Added Last edited
Fit by skin type
General, ingredient-based — not your personalized match.
Dry
78%
Combination (dry)
78%
Balanced
92%
Combination (oily)
62%
Oily
62%
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6
Ingredients
1
Benefits
0
Actives
The COSRX Master Patch Original Fit is a hydrocolloid acne patch designed to protect blemishes while absorbing impurities and excess oil for faster healing. These thin spot patches help reduce redness and prevent picking or external irritation, creating an ideal environment for recovering skin.
Key Insights
Benefits
1
Hydration
Full Ingredients
6 total
About Master Patch Original Fit
Overview
Master Patch Original Fit is a cushioning patch from COSRX, a brand based in Korea. The ingredient list runs to 6 ingredients, each broken down in full below.
Texture and finish
By its ingredient list the formula reads as moderately cushioned — emollient enough to feel like a cream, without the heaviest occlusives near the top. The oils in it point to a dewy, emollient finish rather than a matte one.
What the formula does
Hydration: Moderate. Ingredients that pull and hold water in the upper layers of skin, and here that comes from Paraffinum Liquidum.
Who it suits
On richness alone it suits Balanced skin best, and is the least natural fit for Combination (oily) and Oily skin. Nothing in the list is flagged as a common irritant, which is a reasonable starting point for reactive skin — though a patch test is still the only way to know.
What it does not target
The formula contributes little or nothing on barrier support, antioxidant protection, oil control and brightening and tone. That is not a fault — most products are not meant to do everything — but if one of those is your priority, this is not the product that will address it.
What is not in it
Reading the full list, the formula is fragrance-free, essential-oil-free, no drying alcohol, paraben-free, silicone-free and microplastic-free. Those claims come from the ingredient list itself, not from the packaging.
Where it fits in a routine
Use it in the evening. In a routine it goes on affected areas only, after serums. Keep it to the spot itself — treating clear skin buys irritation, not results.
This summary is generated from the product's ingredient list. It is not a review, it is not the brand's own marketing claims, and it does not replace advice from a dermatologist.
Pros and cons
Drawn purely from the ingredient list
Pros
- No fragrance or declared allergens
- No essential oils
- No drying alcohol
- Silicone-free
- No microplastics
- No common irritants flagged in the list
- No recognised malassezia (fungal acne) triggers
Which skin types it suits
Scored on how rich or light the formula reads from its INCI order.
Suitable for
- Balanced skin
May suit
- Dry skin
- Combination (dry) skin
Less suitable for
- Combination (oily) skin
- Oily skin
Sensitive skin
No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.
Skin concerns
Based on the curated benefits documented for this product's ingredients.
Helps with
-
Hydration 1 ingredient
Attracts and locks in moisture to keep skin plump and dewy
Does not target
Anti-Acne
Anti-Aging
Blackhead Reducing
Dark Spot Fading
Evens Skin Tone
Oil Control
Pore Minimizer
Smooths Bumpy Skin
Soothing
None of the ingredients in this formula are associated with these benefits. This is not unusual, as most products are designed to target a limited number of concerns.
Key ingredients
The actives, UV filters and benefit-carrying ingredients in this formula, in the order they are listed.
Formula analysis
Each axis is scored from the ingredients present and how high up the list they sit.
Hydration
Moderate
Ingredients that pull and hold water in the upper layers of skin
Barrier support
None
Lipids and repair signals that support skin barrier integrity
Antioxidant support
None
Ingredients that mop up free radicals from UV and pollution
Oil control
None
Ingredients that moderate sebum or absorb shine
Brightening
None
Ingredients that act on uneven tone and post-inflammatory marks
Soothing
None
Ingredients aimed at visible redness and reactivity
Cell renewal
None
Retinoids, acids and enzymes that speed surface turnover
Firmness signalling
None
Peptides and growth factors that signal for collagen support
What is and is not in it
Read from the full ingredient list. A brand's own claim may differ.
Free from
- Fragrance-free
- Essential-oil-free
- No drying alcohol
- Paraben-free
- Silicone-free
- Microplastic-free
- Sulfate-free
- Dye-free
- No animal-derived ingredients
Contains
-
Facial oils
Paraffinum Liquidum
What to layer it with
Judged by the same curated rules our routine checker uses. It reads the ingredients, not the label.
Compatible with
- Vitamin C (L-ascorbic acid)
- Retinoids (retinol, retinal)
- AHAs (glycolic, lactic)
- BHA (salicylic acid)
- PHAs (gluconolactone)
- Benzoyl peroxide
- Azelaic acid
- Copper peptides
- Bakuchiol
- Niacinamide
- Hyaluronic acid
- Ceramides
- Signal peptides
- Panthenol
- Sunscreen
Nothing in this formula belongs to a group our rules can put in conflict, so it layers freely. Order still matters — thinnest texture first.
Where it fits in a routine
Evening
- Cleanse
- Toning
- Spot treat
- Moisturise
This product is the "Spot treat" step.
- Keep it to the spot itself — treating clear skin buys irritation, not results.
Safety and suitability
Flags to check, not verdicts. None of this is medical advice — if you are pregnant, breastfeeding or treating a skin condition, ask a doctor.
- Pregnancy and breastfeeding
- Nothing in this formula is on the standard pregnancy-caution list. That is not clearance — ask your doctor about anything you use daily.
- Fungal acne (malassezia)
- No ingredient here is a recognised food source for malassezia.
- Sensitive and reactive skin
- No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.
Ingredients by function
Most ingredients do more than one job, so these counts add up to more than the 6 ingredients on the label.
4
Occlusive
Forms a film that slows water loss
3
Texture agent
Sets the thickness, spread and stability of the formula
1
Antioxidant
Neutralises free radicals from UV and pollution
1
Emollient
Softens and smooths by filling gaps between skin cells
1
Solvent
Dissolves and carries everything else
Ingredient breakdown
Every ingredient on the label, in order, with what it does and roughly how much of it is likely to be there.
- Estimated level
- 10–40%
- Confidence
- Low — inferred from list position alone
1st on the list, which puts it at an estimated 10–40% of the formula.
1,3-Ccyclopentadiene homopolymer, hydrogenated
- Estimated level
- 5–20%
- Confidence
- Low — inferred from list position alone
- Roles
- Occlusive, Texture agent
2nd on the list, which puts it at an estimated 5–20% of the formula.
Cellulose, carboxymethyl ether, sodium salt
- Estimated level
- 5–20%
- Confidence
- Low — inferred from list position alone
- Roles
- Occlusive, Texture agent
3rd on the list, which puts it at an estimated 5–20% of the formula.
Homopolymer of 2-methyl-1 propene
- Estimated level
- 2–10%
- Confidence
- Low — inferred from list position alone
- Roles
- Emollient, Occlusive, Solvent
4th on the list, which puts it at an estimated 2–10% of the formula.
Paraffin oils. Liquid hydrocarbons from petroleum
Hydration
8 scientific references
- Supercharged Hydration
- How Hyaluronic Acid Benefits Skin
- What is Dehydrated Skin & How to Choose the Best Products
- What Your Moisturizer Must Contain
- Moisturizer Myths You Should Stop Believing Now
- The Benefits of Glycerin in Skin Care
- The Best Face Oils for Skin
- How Facial Oils Help Skin
- Estimated level
- 2–10%
- Confidence
- Low — inferred from list position alone
- Roles
- Occlusive, Texture agent
5th on the list, which puts it at an estimated 2–10% of the formula.
Benzene, ethenyl-, polymer with 2-methyl-1,3-butadiene
- Estimated level
- 2–10%
- Confidence
- Low — inferred from list position alone
- Roles
- Antioxidant
6th on the list, which puts it at an estimated 2–10% of the formula.
Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 2,2-bis[[3-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropoxy] methyl]-1,3-propanediyl ester
Frequently asked questions
What ingredients are in Master Patch Original Fit?
HYDROGENATED POLYCYCLOPENTADIENE, CELLULOSE GUM, POLYISOBUTENE, PARAFFINUM LIQUIDUM, STYRENE/ISOPRENE COPOLYMER, PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE.
How do I use Master Patch Original Fit?
Cleanse and fully dry the skin: Begin by gently washing the area with a mild cleanser. The skin must be completely dry; moisture or residual skincare products can interfere with adhesion and reduce effectiveness. Choose the right patch size and apply directly: Select a patch slightly larger than your blemish. Gently peel it off the backing without touching the adhesive, then press it firmly onto the spot, ensuring all edges are securely sealed. Leave it on until it turns white. Change it after showers and cleansing. Replace with a new patch if the blemish hasn’t fully healed.
What skin types is Master Patch Original Fit good for?
Judged on how rich the formula reads from its ingredient list, it suits Balanced skin best. It is the least natural fit for Combination (oily), Oily skin.
Is Master Patch Original Fit good for sensitive skin?
No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.
Is Master Patch Original Fit fungal acne safe?
No ingredient in this formula is a recognised food source for malassezia, the yeast behind fungal acne.
Can I use Master Patch Original Fit while pregnant?
Nothing in this formula is on the standard pregnancy-caution list. That is not medical clearance — check anything you use daily with your doctor or midwife.
Is Master Patch Original Fit fragrance free?
Yes. Reading the full ingredient list, this formula is fragrance-free.
Does Master Patch Original Fit contain alcohol?
No. Reading the full ingredient list, this formula is no drying alcohol.
Is Master Patch Original Fit silicone free?
Yes. Reading the full ingredient list, this formula is silicone-free.
Does Master Patch Original Fit contain essential oils?
No. Reading the full ingredient list, this formula is essential-oil-free.
Is Master Patch Original Fit paraben free?
Yes. Reading the full ingredient list, this formula is paraben-free.
What can I layer with Master Patch Original Fit?
It layers well with Vitamin C (L-ascorbic acid), Retinoids (retinol, retinal), AHAs (glycolic, lactic), BHA (salicylic acid), PHAs (gluconolactone), Benzoyl peroxide.
When should I apply Master Patch Original Fit?
Use it in the evening, on affected areas only, after serums.
How many ingredients does Master Patch Original Fit have?
It lists 6 ingredients, of which 0 are recorded as actives.
Who makes Master Patch Original Fit?
COSRX, a brand based in Korea.