On October 7, Orbus Co., Ltd. announced that it will release EAUf Rhythm Tuning Mask, an emulsion-type sheet mask from the skincare brand "EAUf," on Tuesday, December 1, 2026. It will be sold at Cosme Kitchen, Biople and Biop stores nationwide, and at each WEB STORE.
A single sheet is ¥825 (tax included), and a pack of five is ¥3,740 (tax included). It contains a fermented ingredient derived from brown rice koji and PDRN derived from Damask rose.
Contains a Fermented Ingredient from Brown Rice Koji and PDRN from Damask Rose
According to the company, EAUf Rhythm Tuning Mask is an emulsion-type sheet mask developed with a focus on the rhythm of the skin. It contains a low-molecular fermented ingredient derived from brown rice koji (Aspergillus ferment, a moisturizing ingredient), PDRN derived from Damask rose (Rosa damascena extract, a moisturizing ingredient), and glyceryl glucoside, a moisturizing ingredient inspired by a plant known as the "resurrection plant."
The company describes it as a sheet mask that moisturizes the skin with fermentation and the gifts of plants, prevents rough skin caused by dryness, and conditions the skin to be firm and healthy.
A Mildly Acidic Formula with a Natural Origin Index of 99.5% or More
According to the company, the formula is mildly acidic, and its natural origin index (including water) based on ISO 16128 is 99.5% or more. The formula does not use mineral oil, animal oil, synthetic fragrance, synthetic colorants, ethanol, silicone, preservatives or petroleum-based surfactants.
The content is 24mL, and it comes in single-sheet and five-sheet packs. To use, press the mask onto skin that has been prepared with toner and serum after cleansing, leave it on for about 10 to 20 minutes, then remove it. Work any emulsion left on the skin in with your palms.
"EAUf," Which Champions "Skin Tuning," Is a Brand Built Around a Commitment to Water
"EAUf" was born from a collaboration between "MAISON DE AQUA," a skincare brand based on more than 40 years of research on water, and "Lautashi Design," a design project with Emi Suzuki as designer. For the concept "skin tuning" (hada-choritsu), the company notes that it means "refining the texture of the skin."
The brand name is a coined word from the French "Eau," meaning water, and "Oeuf," meaning egg. The company explains that it uses "High-Density Stable Pure Water®" developed by MAISON DE AQUA, with water blended with minerals according to purpose.
EAUf Rhythm Tuning Mask: Price, Release Date and Where to Buy
- Product name: EAUf Rhythm Tuning Mask (sheet mask)
- Size: 24mL x 1 sheet, 24mL x 5 sheets
- Price: 1 sheet ¥825 (tax included), 5 sheets ¥3,740 (tax included)
- Release date: Tuesday, December 1, 2026
- Available at (physical stores): Cosme Kitchen, Biople and Biop stores nationwide (Biop carries only the single-sheet pack)
- Available at (online): Each WEB STORE, EAUf official WEB STORE
"MAISON DE AQUA" is a skincare brand with the theme of "skin hydration," using groundwater from Hakuba Village, Nagano Prefecture.
Image: courtesy of Orbus Co., Ltd.
