A spot treatment built around the science, not the marketing. The COSRX AC Collection Ultimate Spot Cream uses a tight, purposeful formula to do exactly one job — dry out active breakouts overnight while simultaneously calming the inflammation and beginning the repair process.

The core active system is COSRX's proprietary CentellAC-Rx Complex: three isolated bioactives from Centella Asiatica — Madecassic Acid, Asiaticoside, and Asiatic Acid — each with well-documented wound-healing, anti-inflammatory, and skin-regenerating properties. These aren't broad Centella extracts; they're purified compounds chosen for their specific efficacy in calming and repairing compromised skin. Zinc Oxide absorbs excess sebum around the spot and provides a mild antimicrobial barrier. Calamine delivers a classic drying and soothing action that physically reduces the size of a visible pimple overnight. Aloe Barbadensis Leaf Water provides the hydrating base — making this gentler on the surrounding skin than many alcohol-based spot treatments. Scutellaria Baicalensis Root Extract and Illicium Verum (Anise) Fruit Extract add further anti-inflammatory and antimicrobial support. Tea Tree Leaf Oil completes the antibacterial layer.

The formula is light and non-occlusive, dries clear, and doesn't lift or pill under foundation the next morning.

Sul Skin note: One of the most effective and non-irritating spot treatments in the K-beauty space. The Centella actives mean it treats the breakout without creating another problem.