Deep Clean® Purifying Peel-Off Face Mask. This pore purifying, peel-off sheet mask goes deep down into skin to unclog pores and remove dead skin cells, excess surface oil, dirt, and makeup leaving skin clear and soft. When applied, the sheet mask’s unique formula changes from a liquid to a soft solid and becomes clearer as it dries. The oil-free, non-comedogenic mask peels off easily with absolutely no rinsing required.