I got a polite answer by email from Mr.Toshio Hokari in the Consumer Center of the Kanebo Corporation. I'd like to translate his words as faithful as I can. Here it is.

The series of men's cosmetics DENARI was began to sold in January,'91. The shoot was in November,'90. At the lake in Luzern, Switzerland. The source of the name is from the National Park in Alasuka. The word DENARI means " the great earth".It is from the language spoken by Asumadakan Indian ( Native American). We use natural glacial water taken from the Alasuka Glacier to all products of DENARI series. The water hasa high degree of purity and it fits extremely good to skin. First, it was a problem that which glacial water shouid we use. We directed our attention to the DENARI National Park for its wonderful quality of the water and the beautiful grand view of the Park. The reasons why we offerd him to appear in the commercial is as follows. ・He was a person of intellect with a delicate sensibility that fits to the concept of this product's plan. The image of it was Natural, Pure, and Comfortable. ・This was his first appearance in Japanese commercial. We expected that it must be a big impact on consumers. ・He received '89 Oscar and many other prizes and was looked upon as a genuine actor. He was one of the most expected character actor of great promise. ・By this time there were a class of a lot of fervent fans in Japan. His handsome face, his great power of expression, his sincerity in acting for the films would arouse the broad sympathy from his fans either of women and men. DENARI is sold only in Japan. We can offer nothing about these commercials because there's the rights to his portraits and the contract at that time limits the term of its use and the purouse.