"Rosette Sengan Sabon" collaborates with Ryusenji no Yu: a trial fair where you can test face washes in the large baths

Rosette Sengan Sabon, the foaming face wash brand from Rosette Co., Ltd., will run a limited-time collaboration at Spa Meza Ohtaka Ryusenji no Yu, a hot spring facility in Nagareyama, Chiba Prefecture, from Saturday, October 17 to Friday, October 30, 2026. The company announced it on October 7.

During the period, noren curtains with an original design will appear in the facility, and product testers will be placed at the washing stations of the large communal baths. On Saturday, October 24 and Sunday, October 25, there will also be a prize drawing for Rosette products and a booth.

Try three face washes at the washing stations of the men's and women's baths

Testers are installed at the washing stations of the large communal baths for men and women. You can choose from three types according to your skin concerns and preferences: Rosette Sengan Sabon Clear Wash, Rosette Sengan Sabon Smooth Wash and Rosette Sengan Sabon Acne Wash [quasi-drug].

All three feature a dense, springy foam derived from soap, come in 180mL and cost ¥700 / ¥770 (tax included). Clear Wash contains baking soda (*1), charcoal (*2) and panthenol (*3), and Smooth Wash contains a vitamin C derivative (*4) and clay extract (*5). Acne Wash is a quasi-drug containing the active ingredient dipotassium glycyrrhizate and houttuynia cordata extract (*6), and is said to prevent acne and rough skin (*7).

*1 Sodium hydrogen carbonate [pH adjuster]　*2 Cleansing ingredient　*3 Product antioxidant　*4 Ascorbyl glucoside [product antioxidant]　*5 Sea mud extract [moisturizing ingredient]　*6 Moisturizing ingredient　*7 Prevents acne and rough skin

On October 24 and 25, a prize drawing for Rosette products and a booth

From 12:00 to 20:00 on Saturday, October 24 and Sunday, October 25, a booth introducing Rosette products will be displayed, and a prize drawing will be held for products. The facility is open from 6:00 to 26:00 (last admission 25:30), every day of the year (with two maintenance closure days a year).

Rosette Sengan Sabon x Ryusenji no Yu: event details

• Name: Rosette Sengan Sabon x Spa Meza Ohtaka Ryusenji no Yu collaboration
• Dates: Saturday, October 17 – Friday, October 30, 2026 (collaboration and tester placement)
  Saturday, October 24 and Sunday, October 25, 2026 (prize drawing and booth)
• Hours: Prize drawing and booth 12:00–20:00 / Facility hours 6:00–26:00 (last admission 25:30)
• Venue: Spa Meza Ohtaka Ryusenji no Yu
• Address: 1-15-1 Ohtakanomori-nishi, Nagareyama, Chiba 270-0128
• Notes: Open every day of the year (two maintenance closure days a year)

Rosette Sengan Sabon is a brand of face wash that comes out as foam.

Image: courtesy of Rosette Co., Ltd.