COSRX
Master Patch BasicA spot treatment built around BHA and Salicylic acid, for fighting acne and barrier repair.
The brand gives no description.
Brand price
USD 12.00 · checked 25 Sept 2026 · brand's site
Brand price
USD 12.00 · checked 25 Sept 2026 · brand's site
At a Glance
They come out differently on Fragrance-free; that row is shaded. Tap any answer to see why.
Key Ingredients
No key ingredients
Benefits
Acne Fighting2
Helps clear breakouts and keep pores clear.
No benefits found
Concerns
May Worsen Eczema1
May worsen itching or irritation for eczema-prone skin.
No concerns found
Ingredients Side-by-side
Hydrogenated Poly(C6-20 Olefin) (in both products)
Abrasive
Polyisobutene (in both products)
Viscosity Controlling
Styrene/Isoprene Copolymer (in both products)
Film Forming
Melaleuca Alternifolia Leaf Oil
Antioxidant
- Fragrant essential oil (sensitizer)
- Acne Fighting
- May Worsen Eczema
- May Worsen Irritation
- May Worsen Rosacea
Hydrogenated Poly(C6-20 Olefin) (in both products)
Abrasive
Polyisobutene (in both products)
Viscosity Controlling
Styrene/Isoprene Copolymer (in both products)
Film Forming
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Cellulose Gum
Binding, Emulsion Stabilising, Film Forming, Fragrance, Viscosity Controlling
Cellulose, carboxymethyl ether, sodium salt
Learn more about Cellulose Gum →Hydrogenated Poly(C6-20 Olefin)
Abrasive, Viscosity Controlling
Hydrogenated Poly(C6-20 olefin) is a polymer synthesized from hydrogenated C6-20 olefins
Learn more about Hydrogenated Poly(C6-20 Olefin) →Polyisobutene
Binding, Film Forming, Viscosity Controlling
Homopolymer of 2-methyl-1 propene
Learn more about Polyisobutene →Styrene/Isoprene Copolymer
Film Forming, Opacifying
Benzene, ethenyl-, polymer with 2-methyl-1,3-butadiene
Learn more about Styrene/Isoprene Copolymer →
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