株式会社SISI

SISI (株式会社SISI) is a Japanese clean-beauty skincare brand based in Tokyo, founded in October 2019, that combines at-home skin analysis with science-backed formulations for sensitive skin. The brand's SISI LAB program provides professional-grade skin analysis kits that generate results from approximately 40 trillion data points, enabling personalized skincare routines for every user. SISI develops functional skincare products — including cleansers, vitamin C serums, and carbonated face masks — grounded in dermatologist collaboration and clean, plant-derived ingredients. Its name (私思, 'shishi') reflects the brand's philosophy that caring for one's skin is an act of caring for oneself.