Nikkei press reported 2015 shampoo and hair rinse market share in Japan. According to it, the top supplier was Kao (25%).
Figure: 2015 Shampoo and Hair Rinse Market Share in Japan

| Company | Market share (%) |
| Kao | 24.7 |
| P&G | 19.5 |
| Unilever | 16.2 |
| Shiseido | 14.7 |
| Others | 24.9 |
Source is Nikkei Sangyo Shimbun newspaper, the article on 2016 July 25th.
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