# COSRX Acne Pimple Master Patch for skin with dark spots

**Lovi Fit: Average fit for skin with dark spots.**
Normal Skin Fit: Average · Effectiveness: Average · Safety: High.

Page: https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/dark-spots

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for the United Kingdom.

Brand: [COSRX](https://lovi.care/skincare/uk/brands/cosrx)
Category: [Serums and treatments](https://lovi.care/skincare/uk/best/serums)

This fit is calculated for the concerns frequently associated with dark spots: hyperpigmentation, sun spots, and uneven skin tone. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for skin with dark spots; other serums fit it better.

## Why this fit

- Offers general skin protection for your normal skin due to the presence of Polyurethane Film and Cellulose Gum, which provide a physical barrier but lack targeted ingredients for pigmentation.
- The formula includes liquid paraffin for emollient action, offering moderate suitability for normal skin, though it could benefit from more humectants for optimal hydration.
- The product is safe for your normal skin, as it contains no harsh ingredients and poses no risk of irritation.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/dark-spots): Average (this page)
- [Mature skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/oily-acne-prone-skin): High

## Key ingredients

Hydrocolloid Dressing, Cellulose Gum, Salicylic Acid, Melaleuca Alternifolia Tree Oil Leaf, Liquid Paraffin

## What the research says

- Biocellulose and carboxymethyl cellulose wound dressings significantly reduced healing times and wound areas compared to normal saline dressings in epidermolysis bullosa skin wounds. ([Journal of Wound Care, 2019](https://pubmed.ncbi.nlm.nih.gov/31600103/))
- Twice daily application of a multitargeted dermocosmetic cream provided comparable efficacy to benzoyl peroxide 5% gel in reducing inflammatory, non-inflammatory, and total lesions in 150 Caucasian subjects with mild-to-moderate acne over 56 days, while demonstrating superior skin tolerability. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/37941097/))
- Daily application of hydrocolloid dressing completely prevented nasogastric tube-related pressure injuries, whereas skin care interventions showed no significant preventive effect compared to the control group in intensive care unit patients. ([Journal of Tissue Viability, 2024](https://pubmed.ncbi.nlm.nih.gov/39289093/))
- Hydration of scars for 2 months resulted in significantly reduced itching, somewhat reduced pain, and increased pliability by 10% for both hydrocolloid dressing and moisturizer treatments in patients with keloids or hypertrophic scars, with no change in physical parameters. ([Dermatologic Surgery, 1996](https://pubmed.ncbi.nlm.nih.gov/8874525/))
- Adjunctive hydrocolloid dressing with 0.1% mometasone furoate cream significantly increased treatment efficacy and cost-effectiveness compared to topical steroid alone in patients with moderate to severe lichen simplex chronicus. ([Skin Health and Disease, 2023](https://pubmed.ncbi.nlm.nih.gov/37538322/))
- Cross-linked carboxymethyl cellulose hydrogel provided excellent correction of facial defects, high tolerance, and absence of side effects or migration issues in 84 healthy volunteers. ([Clinical Interventions in Aging, 2010](https://pubmed.ncbi.nlm.nih.gov/21228896/))
- Polymeric bioadhesive microparticles composed of sodium carboxymethyl cellulose and Soluplus and loaded with 18beta-glycyrrhetinic acid form an in situ hydrogel upon contact with wound exudate, enabling controlled drug release that stimulates keratinocyte growth. ([International Journal of Pharmaceutics, 2021](https://pubmed.ncbi.nlm.nih.gov/33862131/))
- Biodegradable wound dressings functionalized with silver nanoparticles showed >99% pathogen growth inhibition, bactericidal effects, free radical scavenging, reduced inflammatory response in macrophages, and accelerated wound healing in animals. ([International Journal of Biological Macromolecules, 2022](https://pubmed.ncbi.nlm.nih.gov/35780920/))
- Cryotherapy with liquid nitrogen achieved a higher cure rate (39%) than salicylic acid (24%) and a wait-and-see approach (16%) for cutaneous warts at 13 weeks in primary care patients. ([CMAJ, 2010](https://pubmed.ncbi.nlm.nih.gov/20837684/))
- A moisturizer containing licochalcone A, 1,2-decanediol, L-carnitine, and salicylic acid significantly reduced noninflammatory, inflammatory, and total acne lesion counts compared to a vehicle control in Thai patients during a 12-week maintenance phase. ([BioMed Research International, 2020](https://pubmed.ncbi.nlm.nih.gov/33150170/))
- Treatment with 2% supramolecular salicylic acid hydrogel resulted in a regression and markedly improvement rate of 51.01% compared to 43.10% for Adapaline gel in patients with mild to moderate facial acne vulgaris, showing no significant difference in efficacy. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38590107/))
- A cream combining propolis, tea tree oil, and Aloe vera reduced erythema scars, acne severity index, and total lesion count better than erythromycin cream in sixty patients with mild to moderate acne vulgaris compared to placebo. ([Clinical Pharmacology, 2018](https://pubmed.ncbi.nlm.nih.gov/30588129/))
- Tea tree oil nanoemulsion containing adapalene gel demonstrated significantly greater reductions in total, inflammatory, and non-inflammatory acne lesions as well as acne severity index compared to adapalene marketed gel in 100 patients with acne vulgaris over 12 weeks. ([Archives of Dermatological Research, 2022](https://pubmed.ncbi.nlm.nih.gov/34251536/))
- Topical 5% tea tree oil gel significantly improved total acne lesions and acne severity index compared to placebo in 60 patients with mild to moderate acne vulgaris, showing 3.55 times and 5.75 times greater efficacy respectively. ([Indian Journal of Dermatology, Venereology and Leprology, 2007](https://pubmed.ncbi.nlm.nih.gov/17314442/))
- Repeated application of concentrated water-in-oil emulsions over four weeks caused no skin irritation, positively affected skin properties, and delivered almost 50% of the applied fluorescein sodium, with isopropyl myristate showing superior penetration performance compared to liquid paraffin in healthy volunteers. ([International Journal of Pharmaceutics, 2019](https://pubmed.ncbi.nlm.nih.gov/31525444/))

## Why other serums fit skin with dark spots better

- Niacinamide significantly decreased hyperpigmentation and increased skin lightness compared with vehicle alone after 4 weeks of use in women by inhibiting melanosome transfer. ([The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/))
- Treatment with 14% ferulic acid and 12% l-ascorbic acid significantly reduced pigmentation and erythema while improving hydration and elasticity in 20 women with photoaged skin, with neither acid proving definitively more effective overall though ascorbic acid showed slightly greater skin lightening. ([Dermatologic Therapy, 2022](https://pubmed.ncbi.nlm.nih.gov/34877760/))

## What reviewers say

Based on a very large amount of data, this hydrocolloid patch is highly praised for its ability to extract impurities from whiteheads and prevent scarring by discouraging skin picking. It is very effective for surface-level pimples with visible heads, though it is generally reported as ineffective for deep, cystic, or hormonal acne that has not yet surfaced.

- Liked: Extracts gunk effectively (mostly mentioned)
- Liked: Prevents skin picking (often mentioned)
- Liked: Speeds up healing (often mentioned)
- Disliked: Ineffective on cystic acne (often mentioned)
- Liked: Stays on well (sometimes noted)
- Disliked: Not truly invisible (sometimes noted)
- Disliked: Adhesion issues (rarely noted)

## How to apply

- Apply this serum as part of your PM routine starting 3x/week and build up to daily use if your skin likes it.
- Place the serum after cleansing and toning, but before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and wait a minute for it to absorb.
- Apply the serum on dry skin to help fade pigmentation effectively.
- Avoid the eye area and always use SPF 30+ during the day.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does COSRX Acne Pimple Master Patch work for skin with dark spots?

This product works moderately well for your skin, providing a protective physical barrier and keeping the area soft, though it lacks targeted ingredients for dark spots. A treatment for this skin needs a blend of antioxidants, soothing components like niacinamide and propolis, and hydrating ingredients.
Sources: [Journal of Wound Care, 2019](https://pubmed.ncbi.nlm.nih.gov/31600103/)

### Which ingredients make this patch a good fit for skin with dark spots?

This patch works to protect your skin with physical barriers, but it lacks targeted ingredients for dark spots. A product of this type needs effective antioxidants, soothing ingredients like niacinamide or propolis, and hydrating components to truly fit this skin.

### What does Hydrocolloid Dressing do for skin with dark spots?

Hydrocolloid Dressing is not suitable for skin with dark spots because it is designed to maintain a moist environment for wounds and protect against contamination. A product for dark spots needs brightening ingredients like vitamin C or niacinamide to help fade discoloration and even out skin tone.

### What does Cellulose Gum do for skin with dark spots?

Cellulose gum is primarily used to thicken and stabilize skincare products rather than to directly treat dark spots. A product intended to help with dark spots on this type of skin needs brightening ingredients like vitamin C or niacinamide.

### Where does this patch go in a skincare routine for skin with dark spots?

This patch goes in the evening routine as a treatment step, though dark spots need brightening ingredients and moisture-attracting humectants to truly help fade discoloration.

### Can I use this patch with retinol, and in what order?

You can use this patch in your routine with retinol, applying it directly on blemishes after your retinol product has absorbed or as the final treatment step in the evening. The physical barrier is safe for your skin and unlikely to cause irritation, though skin with dark spots also benefits from brightening ingredients and hydrating components for optimal care.

### How often should I use this patch?

This patch can be used as part of your evening routine, applying it when treating your skin. Skin with dark spots needs products that combine exfoliating acids and brightening ingredients to fade dark marks.

### Can this patch clog pores, cause breakouts or purging for skin with dark spots?

This patch is unlikely to clog pores or cause breakouts on your skin with dark spots, as it contains no harsh ingredients and poses no risk of irritation. A product of this type needs targeted ingredients for pigmentation to help fade dark spots.

## Alternatives for skin with dark spots

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/uk/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/dark-spots) — High fit — £36.96 at Amazon
- [Guerlain Abeille Royale Double R Renew & Repair Serum](https://lovi.care/skincare/uk/p/guerlain/abeille-royale-double-r-renew-and-repair-advanced-serum/for/dark-spots) — High fit — £107.78 at Amazon
- [La Mer The Regenerating Serum](https://lovi.care/skincare/uk/p/la-mer/the-regenerating-serum/for/dark-spots) — High fit — £372.06 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/uk/p/cerave/foaming-facial-cleanser/for/dark-spots) — Superior fit — £8.29 at Amazon
- Hydrating Toner: [Pyunkang Yul Calming Deep Moisture Toner](https://lovi.care/skincare/uk/p/pyunkang-yul/calming-deep-moisture-toner/for/dark-spots) — Superior fit — £11.65 at Amazon
- Moisturizer: [Some By Mi Yuja Niacin Brightening Moisture Gel Cream](https://lovi.care/skincare/uk/p/some-by-mi/yuja-niacin-brightening-moisture-gel-cream/for/dark-spots) — Superior fit — £11.90 at Amazon

## Where to buy

- Amazon.co.uk: £3.38 (https://www.amazon.co.uk/dp/B08TMHW1RQ?tag=lovi-care-web-product-21&linkCode=osi&th=1&psc=1)
- Lookfantastic: £4.49 (https://www.lookfantastic.com/p/cosrx-acne-pimple-master-patch-24-patches/11401172/)
- Notino: £9.50 (https://www.notino.co.uk/cosrx/master-patch-basic-patches-for-problematic-skin-to-treat-acne/p-16172302/)
Prices checked 10 Oct – 6 Nov 2026.

## Ingredients

Cellulose Gum, Styrene Isoprene Styrene Block Copolymer, Polyisobutylene, Petroleum Resin, Polyurethane Film, Liquid Paraffin, Tetrakis Methane
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/cosrx/acne-pimple-master-patch/for/dark-spots
- United Kingdom: https://lovi.care/skincare/uk/p/cosrx/acne-pimple-master-patch/for/dark-spots (this page)
- Ireland: https://lovi.care/skincare/ie/p/cosrx/acne-pimple-master-patch/for/dark-spots
- Germany: https://lovi.care/skincare/de/p/cosrx/acne-pimple-master-patch/for/dark-spots
- France: https://lovi.care/skincare/fr/p/cosrx/acne-pimple-master-patch/for/dark-spots
- Italy: https://lovi.care/skincare/it/p/cosrx/acne-pimple-master-patch/for/dark-spots
- Netherlands: https://lovi.care/skincare/nl/p/cosrx/acne-pimple-master-patch/for/dark-spots
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- Canada: https://lovi.care/skincare/ca/p/cosrx/acne-pimple-master-patch/for/dark-spots
- Australia: https://lovi.care/skincare/au/p/cosrx/acne-pimple-master-patch/for/dark-spots
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- United Arab Emirates: https://lovi.care/skincare/ae/p/cosrx/acne-pimple-master-patch/for/dark-spots