TSUBAKI Premium Hair Mask

1 to 2 times per week as recommended by Shiseido. It's a concentrated treatment, not a daily conditioner. For very damaged or dry hair, you can use it twice weekly. For normal to slightly dry hair, once a week is enough. Overuse won't hurt but it's unnecessary and wasteful.

Camellia oil (tsubaki in Japanese) is rich in oleic acid and antioxidants. It penetrates the hair shaft to lock in moisture, adds shine without greasiness, smooths frizz, and creates a protective layer against humidity. It's been used in Japanese haircare for centuries because it delivers deep nourishment without weighing hair down.

Yes, but it's not necessary. The formula is designed to penetrate within 5 to 10 minutes. Leaving it on for 30 minutes or overnight won't increase benefits significantly. If you want deeper treatment, focus on applying it to damp (not dripping wet) hair and covering with a shower cap for the recommended time.