An extract obtained from the seeds of Alpinia katsumadai, one of the traditional Chinese plants. It significantly activates the PLD1 signal which is a melanin braking system. Since it has a new mechanism of action for whitening, a synergistic effect can be expected by combining it with existing whitening materials. And, it is an ingredient exclusively for Japanese quasi-drugs. This product is formulated with a vegetable 1,3-butylene glycol solution derived from sugar cane.