COSRX Master Patch Original Fit (24 patches)

Discreet hydrocolloid patches that cover, protect, and manage blemishes effectively. Absorb excess fluid, shield spots from bacteria and irritation, and support overnight healing. Reduce redness, swelling, and prevent picking while keeping affected areas clean—ideal for all skin types, especially oily and acne-prone.

If you check any of these boxes, this is for you:

• You have occasional breakouts or targeted blemishes you want to flatten quickly.
• You tend to pick or touch pimples, causing more irritation and scarring.
• You want an overnight healing treatment that's discreet and fuss-free.

Hydrocolloid Acne Patches

Discreet hydrocolloid patches that help cover, protect, and manage blemishes. These patches absorb fluids, shield spots from irritation, and support skin healing overnight—helping reduce redness and swelling while keeping the area clean and protected from bacteria.

Key Features

• High-quality hydrocolloid material that adheres securely and creates a protective barrier over blemishes without causing irritation.
• Includes three patch sizes (small, medium, large) so you can find the perfect fit for various blemishes and body areas.
• Fragrance-free and minimal-ingredient design to reduce risk of chemical irritation or adverse reactions.
• Transparent or ultra-low-profile appearance that is discreet and wearable under makeup or during the day—barely noticeable.
• Absorbs excess oil, pus, and impurities while forming a visible white gel layer indicating active fluid absorption.

Primary Advantages

• Reduces Redness & Swelling: Clinical studies show hydrocolloid patches help reduce inflammation, redness, size, and elevation of acne lesions in as little as 4-6 hours.
• Prevents Picking & Picking-Related Damage: Physical barrier physically blocks fingers from touching or picking, preventing further irritation, secondary infection, and post-acne scarring.
• Simple Overnight Healing: Just stick on before bed and let it work while you sleep—no complicated procedures or multiple applications needed.
• Absorbs Fluid & Protects from Bacteria: Hydrocolloid technology absorbs excess oil, bacteria, and pus while the waterproof outer layer keeps bacteria and dirt away from the blemish, preventing infection.
• Creates Optimal Healing Environment: Maintains moist environment that promotes faster healing compared to air-exposed or over-dried breakouts.

Core Components

• Hydrocolloid Gel (Primary Active): Moisture-absorbing material derived from cellulose gum that creates a gel layer as it absorbs fluids, drawing out impurities and reducing breakout size and inflammation.
• Polyurethane Film Layer: Flexible, waterproof outer barrier that keeps bacteria and external irritants away while remaining breathable and allowing oxygen exchange for optimal healing.
• Cellulose Gum Base: Forms the hydrocolloid adhesive foundation, providing strong but gentle adhesion without damaging skin upon removal.
• Styrene/Isoprene Copolymer & Natural Rubber: Flexible polymers that ensure patches conform to skin contours while maintaining secure adhesion for 6-8 hours or longer.
• Polyisobutene, Petroleum Resin, Liquid Paraffin: Adhesive support ingredients that help patches stick securely to skin while remaining comfortable and minimally irritating.

Important Notes

• Skin Type Compatibility: Recommended for oily and acne-prone skin. Safe and effective for all skin types, though those with sensitive or thin skin should apply and remove patches gently to avoid stratum corneum disruption.
• Optimal Patch Adhesion: Ensure skin is completely dry and free from moisturizer, serums, oils, or residue before application. Patches adhere best on clean, dry skin for maximum effectiveness.
• Best Results with Whiteheads: Most effective on surface whiteheads and pustules that have already "come to a head." Less effective on deep cystic acne or closed comedones that lack surface fluid.
• Usage Frequency: Replace patches as needed until blemish fully heals (typically 2-5 applications). Can be worn continuously or rotated day/night use for extended treatment.
• Avoid Sensitive Areas: Do not apply on severely broken, extremely irritated, or excessively inflamed skin. Avoid applying to open wounds or areas with active dermatitis without medical approval.
• Cruelty-Free & Safe: Typically animal-free and formulated without harsh chemicals. Suitable for vegan skincare routines.

Step 1 - Cleanse & Dry: Cleanse the skin area with a gentle cleanser and pat completely dry with a clean towel. Ensure no moisturizer, serum, or oils remain on the blemish area for optimal adhesion.

Step 2 - Select Patch Size: Choose a patch size slightly larger than the blemish. Three sizes are provided to accommodate various blemish sizes—small for typical breakouts, medium for larger spots, large for extra coverage.

Step 3 - Apply Patch: Peel the backing from the patch and carefully place it directly over the blemish, pressing down the edges firmly to ensure complete adhesion and seal. Make sure the entire patch adheres securely to prevent lifting.

Step 4 - Wear & Monitor: Wear the patch continuously for 6-8 hours or overnight until the patch becomes opaque or white (indicating active fluid absorption). Patches typically show visible white gel layer as they absorb impurities.

Step 5 - Remove & Inspect: Gently peel the patch away from skin—start at one edge and slowly pull to avoid sudden tugging. Inspect the patch to see visible absorption (white gel formation indicates effectiveness).

Step 6 - Replace as Needed: Discard the used patch and apply a new one if the blemish hasn't fully healed. Continue replacement every 6-8 hours or overnight until blemish completely resolves (typically 2-5 patches needed).

Daytime Use: Patches are discreet enough for daytime wear, including under makeup. Some users apply makeup over patches for seamless coverage.