Starwood Hotels and Resorts is to start collecting and recycling toiletries to help hygiene charity Clean the World.
Used soaps will be collected from up to 400 Starwood hotels across North America, before being sanitised and reformed into new bars.
The hotel group estimated that 1.6 million pounds of hotel soap could be recycled each year through the partnership.
Denise Coll, president of Starwood Hotels in North America, said: "Our North American properties represent more than 176,000 rooms, each of which offer the highest quality soaps and bottled amenities to our guests on a daily basis.”
According to Clean the World, every day 9,000 children around the world die from diseases, such as pneumonia and cholera, that could be prevented by washing with bar soap.
Clean the World claims to be the largest global recycler of hotel amenities.
Over the past two years since its launch, more than 8 million bars of soap have been distributed in some 40 countries.
By redistributing the toiletries, the organization estimates it has diverted a total of 550 tonnes of hotel waste from landfills in the US and Canada.
www.cleantheworld.org www.starwoodhotels.com