Excess oil can clog pores and lead to blackheads. Luckily, these strips, infused with natural charcoal, trap and draw out deep-down impurities and excess oil. Biore Deep Cleansing Charcoal Pore Strips work like a magnet, instantly locking onto and drawing out deep-down dirt & oil that can cause blackheads. Infused with natural charcoal, these innovative pore strips draw out excess oil for the deepest clean. In just 10 minutes, you'll remove weeks' worth of build-up and see 3 x less oil.