Master Patch Basic by Cosrx is a hydrocolloid patch that reduces impurities while providing an airtight seal. It is suitable not only for impure or oily skin but also for sensitive skin. The round, soft shape adheres firmly to the skin and its discreet dimensions make it virtually invisible in everyday life. Furthermore, it adapts perfectly to any skin tone and ensures an inconspicuous appearance during the day, at night and under make-up. The patch has a convenient cut line for easy removal and enables hygienic application. It covers pustules optimally so that they can recede without dirt getting into open areas. The small patch is also ideal for pimples that are a result of the monthly cycle or stress.