COSRX Clear Fit Master Patch

COSRX

Clear Fit Master Patch

face patch

Added Last edited

Fit by skin type

General, ingredient-based — not your personalized match.

Dry
76%
Combination (dry)
76%
Balanced
94%
Combination (oily)
64%
Oily
64%

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7
Ingredients
0
Benefits
0
Actives
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The COSRX Clear Fit Master Patch is a thin, clear hydrocolloid patch for acne or pimples. It effectively extracts impurities while creating a protective barrier that guards against external irritants. This ultrathin patch will give you a natural look by covering blemishes during the day. Similar to the texture of a hydrogel sheet mask, it adheres to the skin well, seals around the acne to protect it from bacteria and dirt (which is what causes them), and maintains moisture inside.

Key Insights

Risks

1
Microplastic

Full Ingredients

7 total
PETROLEUM DISTILLATES CELLULOSE GUM 4-T-BUTYL STYRENE POLYURETHANE CROSSPOLYMER-2 POLYISOBUTENE PARAFFIN PERFLUOROPERHYDROBENZYL TETRALIN

About Clear Fit Master Patch

Overview

Clear Fit Master Patch is a cushioning patch from COSRX, a brand based in Korea. The ingredient list runs to 7 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. There is very little humectant content, so this is not the step in a routine that adds water to skin.

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 hydration, barrier support, antioxidant protection and oil control. 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 sulfate-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 common irritants flagged in the list
  • No recognised malassezia (fungal acne) triggers

Things to know

  • Contains a solid synthetic polymer (microplastic)

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.

Formula analysis

Each axis is scored from the ingredients present and how high up the list they sit.

Hydration None

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
  • Sulfate-free
  • Dye-free
  • Oil-free
  • No animal-derived ingredients

Contains

  • Microplastics

    Polyurethane Crosspolymer-2

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
  1. Cleanse
  2. Toning
  3. Spot treat
  4. 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.
Recorded ingredient risks
Microplastic

Ingredients by function

Most ingredients do more than one job, so these counts add up to more than the 7 ingredients on the label.

3
Occlusive

Forms a film that slows water loss

3
Texture agent

Sets the thickness, spread and stability of the formula

2
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.

1 Petroleum Distillates Solvent
Estimated level
10–40%
Confidence
Low — inferred from list position alone
Roles
Solvent

1st on the list, which puts it at an estimated 10–40% of the formula.

Petroleum. A complex combination of hydrocarbons. It consists predominantly of aliphatic, alicyclic and aromatic hydrocarbons. It may also contain small amounts of nitrogen, oxygen and sulfur compounds. This category encompasses light, medium, and heavy petroleums, as well as the oils extracted from tar sands. Hydrocarbonaceous materials requiring major chemical changes for their recovery or conversion to petroleum refinery feedstocks such as crude shale oils, upgraded shale oils and liquid coal fuels are not included in this definition / Petroleum gases, liquefied. A complex combination of hydrocarbons produced by the distillation of crude oil. It consists of hydrocarbons having carbon numbers predominantly in the range of C3 through C7 and boiling in the range of approximately -40[0]C to 80[0]C (-40[0]F to 176[0]F)

2 Cellulose Gum Occlusive
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

3 4-t-butyl Styrene
Estimated level
5–20%
Confidence
Low — inferred from list position alone

3rd on the list, which puts it at an estimated 5–20% of the formula.

Benzene, 1-(1,1-dimethylethyl)-4-ethenyl-

4 Polyurethane Crosspolymer-2 Occlusive
Estimated level
2–10%
Confidence
Low — inferred from list position alone
Roles
Occlusive

4th on the list, which puts it at an estimated 2–10% of the formula.

Polyurethane Crosspolymer-2 is a complex, highly-crosslinked polymer prepared by reacting the polymeric reaction product of guanazole, melamine, glyoxal, glyoxylic acid, and 2,2-dimethoxyacetaldehyde with trimethyolpropane/xylylene diisocyanate crosspolymer and Cellulose Gum.

Microplastic
5 Polyisobutene Occlusive
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.

Homopolymer of 2-methyl-1 propene

6 Paraffin Texture agent
Estimated level
2–10%
Confidence
Low — inferred from list position alone
Roles
Texture agent

6th on the list, which puts it at an estimated 2–10% of the formula.

Paraffin is a solid mixture of hydrocarbons obtained from petroleum characterized by relatively large crystals.

7 Perfluoroperhydrobenzyl Tetralin Solvent
Estimated level
1–5%
Confidence
Low — inferred from list position alone
Roles
Solvent

7th on the list, which puts it at an estimated 1–5% of the formula.

2-[Difluoro(undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydronaphtalene

Frequently asked questions

What ingredients are in Clear Fit Master Patch?

PETROLEUM DISTILLATES, CELLULOSE GUM, 4-T-BUTYL STYRENE, POLYURETHANE CROSSPOLYMER-2, POLYISOBUTENE, PARAFFIN, PERFLUOROPERHYDROBENZYL TETRALIN.

How do I use Clear Fit Master Patch?

Wash your face thoroughly with cleanser. Stick COSRX Clear Fit Master Patch onto the dry skin before proceeding with your skin care routine. After 8-10 hours, the COSRX Clear Fit Master Patch would turn white after it absorbed pus and impurities. When it turns white, peel it off gently. Then replace it with a new one.

What skin types is Clear Fit Master Patch 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 Clear Fit Master Patch 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 Clear Fit Master Patch fungal acne safe?

No ingredient in this formula is a recognised food source for malassezia, the yeast behind fungal acne.

Can I use Clear Fit Master Patch 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 Clear Fit Master Patch fragrance free?

Yes. Reading the full ingredient list, this formula is fragrance-free.

Does Clear Fit Master Patch contain alcohol?

No. Reading the full ingredient list, this formula is no drying alcohol.

Is Clear Fit Master Patch silicone free?

Yes. Reading the full ingredient list, this formula is silicone-free.

Does Clear Fit Master Patch contain essential oils?

No. Reading the full ingredient list, this formula is essential-oil-free.

Is Clear Fit Master Patch paraben free?

Yes. Reading the full ingredient list, this formula is paraben-free.

What can I layer with Clear Fit Master Patch?

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 Clear Fit Master Patch?

Use it in the evening, on affected areas only, after serums.

How many ingredients does Clear Fit Master Patch have?

It lists 7 ingredients, of which 0 are recorded as actives.

Who makes Clear Fit Master Patch?

COSRX, a brand based in Korea.

Brand
COSRX
Country
Korea
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