Hadasei-3

Tatcha has a secret ingredient, a complex so important to the brand that it’s the base of nearly every Tatcha skincare product. Meet Hadasei-3, the proprietary, fermented complex that blends time-honored ingredients with advanced scientific techniques to create a formula that plumps skin, supports the barrier, and minimizes visible signs of aging.

Crafted by the scientists at the Tatcha Institute in Tokyo, Hadasei-3 is deeply inspired by Japanese traditions. In Japanese, “hada” means skin, and “sei” means life. As for the number “3”, it refers to the foundational ingredients that power the complex: Akita rice, Uji green tea, and Okinawa algae, cornerstones of the nutrient-rich Japanese diet. The Tatcha Institute then borrowed a practice used for centuries in Japanese food and wellness: “hakkō,” or fermentation. Crafted with a proprietary yeast and double-fermented rice, along with algae and green tea, Hadasei-3 is rich in lactic acid, amino acids, antioxidants, and nutrients that support healthy-looking skin.

Why is Hadasei-3 in almost all of Tatcha’s formulas? The Tatcha Institute discovered that Hadasei-3 could function as a nutrient-rich base rather than just an added ingredient. By supplementing a portion of the water phase in the formula with Hadasei-3, Tatcha’s skincare delivers nourishing and hydrating benefits from the very first step. Hadasei-3 doesn’t just sit on the skin’s surface; it delivers its nutrients where skin can use them for visible transformation.

Hadasei-3 is also the essence of The Essence, which is composed entirely of the complex. The Essence does it all: supports healthy aging, softens, smooths, hydrates, preps the skin, and protects. It works instantly, improving skin moisturization the moment it is applied, and over time helps to improve the appearance of fine lines, wrinkles, and firmness. Hadasei-3’s nourishing benefits are also present in our award-winning moisturizers, from the decadent Dewy Skin Cream, which seals in moisture and imparts a dewy glow, to the pore-refining Water Cream and the weightless Silk Cream, which visibly firms and improves skin elasticity. Hadasei-3 skincare products deliver unparalleled hydration, yet never weigh down the skin.

If you’re ready to experience luminous hydration, enviable moisture, and comfortable barrier support, explore our favorite formulas, powered by Hadasei-3.