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Japanese natural cosmetics brand Shokubutsu Hana and TBWA\SMP have floated an unconventional idea in the Philippines to help clean Manila's grievously polluted Pasig River—an 88-foot-long billboard made of vetiver, a grass that absorbs deadly toxins. Vetiver is often used to treat waste water and landfills, and the billboard can cleanse up to 8,000 gallons a day.
On its website, Shokubutsu Hana says the effort represents the company's belief in "healthy beauty brought about by the restorative power of nature" and commitment to "provide not only a clean message but also a clean future."

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