COSRX
COSRX Acne Pimple Master Patch – Hydrocolloid Pimple Patches (24 patches, 3 sizes)
COSRX Acne Pimple Master Patch – Hydrocolloid Pimple Patches (24 patches, 3 sizes)
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The pimple patch that started it all. A clear, ultra-thin hydrocolloid sticker you place over a spot before bed — and by morning, the patch has turned white because it absorbed everything you would have squeezed out with your fingers. No picking. No scarring. No dark mark left behind.
HOW IT WORKS
Hydrocolloid technology — the patch creates a sealed, moist environment over the spot that draws out fluid and impurities while the skin barrier heals underneath. The same wound-healing science used in clinical dressings, miniaturised into a transparent sticker for your face.
Ultra-thin and transparent — nearly invisible on skin. Wear it overnight or during the day under makeup — foundation and UV protection go on top without disturbing it.
Protective barrier — the patch physically stops you from touching, picking or squeezing the spot. That alone helps prevent most post-acne marks (PIH) from forming in the first place.
Three sizes in one pack — 7mm (10 patches), 10mm (5 patches), 12mm (9 patches), so you have the right size for a tiny whitehead or a larger surface breakout.
This is educational information, not medical advice. For persistent skin concerns, consult a qualified dermatologist.
GOOD FOR
Whiteheads and surface pimples · Post-picking inflammation and open spots · Preventing post-inflammatory hyperpigmentation (PIH) · Hormonal breakouts and stress acne · All skin types, including sensitive
Best on surface-level spots with a visible head. Deep cystic acne under the skin needs different support.
HOW TO USE
- Cleanse and dry the area thoroughly — skin must be clean and oil-free for the patch to adhere.
- Peel one patch off the sheet. Choose the size that fully covers the spot with a small margin.
- Apply directly onto the pimple before any other skincare. No serums, oils or moisturiser underneath — they stop the patch from sticking.
- Leave on for 6–8 hours or overnight.
- The patch turns white as it absorbs fluid — that's it working. Replace with a fresh one if the spot still needs more time.
- Gently cleanse the area after removing.
FULL INGREDIENTS
Cellulose Gum, Styrene Isoprene Styrene Block Copolymer, Polyisobutylene, Petroleum Resin, Polyurethane Film, Liquid Paraffin, Tetrakis Methane.
Free of: fragrance, alcohol, parabens. Hypoallergenic formula.
FREQUENTLY ASKED QUESTIONS
Do COSRX pimple patches actually work overnight?
On surface-level spots that have come to a head, yes. The hydrocolloid draws fluid out of the pimple while you sleep — which is why the patch turns white by morning. Deep cystic spots under the skin won't disappear overnight, but the patch still helps reduce the appearance of redness and stops you from picking, which is often where the real damage happens.
Can I wear a COSRX pimple patch under makeup during the day?
Yes. The patch is ultra-thin and transparent, designed to be nearly invisible on skin. Apply it on clean, dry skin first, then layer your UV protection and makeup on top. For the smoothest finish, set the area lightly with powder after foundation. The patch stays in place and keeps working throughout the day.
How many patches are in one pack of COSRX Acne Pimple Master Patch?
Each pack contains 24 patches across three sizes: 7mm (10 patches), 10mm (5 patches) and 12mm (9 patches). This gives you the right size for every spot — from small whiteheads to larger surface breakouts. One pack typically lasts several weeks depending on frequency of use.
We're here to educate, not to diagnose. For personalised skin advice, always consult a qualified dermatologist.
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