“When it comes to saunas, it's Success!” Kao's "Success" Launches 'Success Sauna Collection' Campaign in Collaboration with Japan's Largest Sauna Media "Sauna Collection" starting May 1st.

Kao Corporation (Headquarters: Chuo-ku, Tokyo)'s men's hair care brand "Success" will launch a joint campaign called 'Success Sauna Collection' with "Sauna Collection," Japan's largest sauna-focused media operated by HIDANE Corporation (Headquarters: Yokohama City, Kanagawa Prefecture).

As the first phase, from Friday, May 1, 2026, to Thursday, May 14, 2026, a special collaboration will be held with four highly popular sauna facilities among sauna enthusiasts: Matsumoto-yu, Sauna Tokyo, Shinagawa Sauna, and Sauna & Capsule Hotel Hokou, featuring four series of Success products.

1. Background and Purpose of the Project In recent years, sauna culture has become established, especially among businessmen, and awareness of grooming after refreshing has also increased. This project is an experiential event aimed at spreading the feeling among sauna lovers that "it feels great to use Success before and after a sauna session." Under the name "Success Sauna Collection," we will match each series of Success with carefully selected popular facilities, creating a new form of "Sa-katsu" (sauna activities) that combines the joy of visiting various facilities with product experience, encouraging users to think, "Which facility should I visit next, and which Success product should I try?" As the first phase, a special collaboration will be implemented focusing on the installation of Success products and facility decorations at Matsumoto-yu, Sauna Tokyo, Shinagawa Sauna, and Sauna & Capsule Hotel Hokou, four facilities that are tremendously popular with sauna enthusiasts.

2. Product Placement Details "Success Medicated Shampoo" x "Matsumoto-yu" Matsumoto-yu Address: 5-29-12 Higashi-Nakano, Nakano-ku, Tokyo 164-0003 Official HP: https://www.matsumoto-yu.com/ Products Installed Success Medicated Shampoo [Quasi-drug] Prevents scalp and hair odor, prevents dandruff and itchiness. Product name: Success Medicated Shampoo u Success Hair Fluffy Rinse Success Medicated Shampoo without Rinse [Quasi-drug] Prevents scalp and hair odor, prevents dandruff and itchiness. Product name: Success Medicated Shampoo RJ *Product quantities are limited. The campaign will end once products run out, so please be aware in advance.

"Success 24" x "Sauna Tokyo" Sauna Tokyo Address: 3-13-4 Akasaka, Minato-ku, Tokyo 107-0052 Official HP: https://sauna-tokyo.jp/ Products Installed Success 24 Fresh Feel Shampoo Success 24 Fresh Feel Conditioner Success 24 Moist Feel Shampoo Success 24 Moist Feel Conditioner *Product quantities are limited. The campaign will end once products run out, so please be aware in advance.

"Success RESIL" x "Shinagawa Sauna" Shinagawa Sauna 1-6-1 Ooi, Shinagawa-ku, Tokyo 140-0014 Official HP: https://www.shinagawa-sauna.com/ Products Installed Success RESIL Reset Shampoo Success RESIL Rebound Conditioner *Product quantities are limited. The campaign will end once products run out, so please be aware in advance.

"Success Shampoo Volume Up Type" x "Sauna & Capsule Hotel Hokou" Sauna & Capsule Hotel Hokou TK Building, 7-2-16 Ueno, Taito-ku, Tokyo 110-0005 Official HP: https://www.saunahokuou.com/ Products Installed Success Shampoo Volume Up Type *Product quantities are limited. The campaign will end once products run out, so please be aware in advance.

3. Facility Decoration Details By designing information flow to match the sauna experience, we deeply convey the appeal of Success products. Entrance Decoration Original noren (curtains), roll-up banners, and product stands for this campaign will be placed at facility entrances to widely inform users about the campaign. Storefront Noren Bathroom Decoration Medium and large banners installed inside bathrooms will effectively convey the key messages of each Success product to users. Large Banner Medium Banner Product Area and Locker Decoration Specific product features and effects will be displayed as POPs to help users understand them in depth. Product POP Locker Stickers

4. SNS Campaign By sharing this campaign on SNS (X or Instagram), participants can win limited edition goods and luxurious prizes. Experience: Use Success products in the bath ↓ Post: Share your thoughts on SNS with the hashtag "#SuccessSaunaCollection." ↓ Receive: Show your post screen at the reception to get a limited collaboration sticker. ↓ Double Chance: Sticker