Tatcha The Clarifying Clay Mask - Exfoliating Japanese Clay Mask. A clarifying clay mask that warms to open pores and purify with Japanese volcanic ash, gently exfoliates with Japanese konjac, and minimizes excess oil and sebum with Okinawa kucha clay for smoother, clearer skin in just 3 minutes. This creamy, easy-to-spread mask changes color and temperature. New in box