KISO Facial Mask HY (Hyaluronic Acid) 19 sheets (5 sheets x 3 + 4 sheets) Retail Price: ¥4180 (¥220 x 19 sheets) Condition: New, Unused Instant purchase available Product Description Sheet mask containing hyaluronic acid. Individually packaged, making it convenient for travel. Individually packaged for easy portability, and uses hot spring water without the need for tap water. It leads to smooth, supple skin like you've just come out of a hot spring.