Medicube Zero Pore Blackhead Mud Mask is a exfoliating face mask for oily skin. An ideal purifying mask for oily and problematic skin, designed to clear clogged follicles and absorb excess sebum. Zero Pore Blackhead Mud Mask combines AHA acids such as glycolic acid, BHA acids such as salicylic acid and PHA acids such as gluconolactone, which gently exfoliate the skin, smoothing it and reducing blemishes, while controlling the activity of the sebaceous glands.