GLASS HAIR LAB

Designed as Step 1.5 of your Japanese haircare routine, these high-performance masks deeply repair damaged strands while locking in intense moisture. Use Shiseido Fino to rebuild and strengthen hair from within, and Shiseido Tsubaki to seal cuticles for instant softness and mirror-like shine. By alternating them weekly (1 to 2 times a week), you give your hair the perfect balance of deep structural repair and a flawless, light-reflecting "glass hair" finish.