The travel industry has already started to make this change on their own, USA Today pointed out. The Walt Disney Co. said last year it would stop using single-use shampoo bottles in resorts and on cruise ships. Then, this July, InterContinental Hotels Group became the first hotel company to promise to phase out the mini bottles across all of its brands and properties. Marriott, the world's largest hotel chian, followed suit with a similar pledge a month later. The bill was even supported by the California Hotel and Lodging Association (CHLA).

"As long-time advocates of environmental stewardship, CHLA applauds Gov. Newsom and Assemblymember Kalra for working with California hotels to make AB 1162 good for our environment and for our industry," CHLA President and CEO Lynn S. Mohrfeld said in a statement reported by The San Jose Spotlight. "We especially appreciate Assemblymember Kalra's recognition of the many innovative steps hotels have taken to make a more sustainable future."

The bill gives large hotels until Jan. 2023 to phase out the tiny shampoos, conditioners and soaps. Hotels with fewer than 50 beds will have until Jan. 2024. After that date, hotels found in violation will face fines. The first violation would trigger a warning and a $500 fine for every day the law is violated. A second violation would cost the establishment $2,000, CNN explained. The law will not apply to nursing homes, hospitals, prisons or homeless shelters.

The bill was opposed by the Personal Care Products Council, which claims it "will impact personal care product manufacturers significantly, including small and medium sized companies that may be re-packers or distributors," The Sacramento Bee reported.

Its passage comes as concerns mount about plastic pollution, which enters the world's oceans at a rate of at least eight million tons a year. California has long been a national leader in tackling this problem, as CNN pointed out. In 2014, it became the first state to ban plastic bags.

Other states may follow its lead on mini hotel bottles as well. New York Sen. Todd Kaminsky has sponsored a bill that would do the same in the Empire State.

"Little everyday actions, like eliminating small plastic bottles, will have a positive impact on our environment," Kaminsky said in a press release reported by CNN. "By barring hotels from giving single-use plastic toiletries to customers, we are safeguarding our environment, and mitigating plastic waste and waterway pollution."