Having visited factories that make cosmetics for foreign brands, Wu came to the conclusion that many cosmetics are made from chemicals about which there is no understanding of their long-term ill effects on the skin. Consequently, Wu and his fellow researchers decided to go the natural route.
曾走訪坊間化妝品代工廠的他有感而發地說，不少化妝品是以化學原料調製，長期使用不知會對肌膚產生什麼不良影響，有鑑於此，他們決定走天然路線。