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Consider a lower-plastic toothbrush
Handle material is only part of a toothbrush's lifecycle.
What changes the result
Bristles, manufacturing and local disposal options also matter; bamboo does not make every component compostable.
Check what you already own before buying something. The benefit comes from repeated use.
References in the original project +
Turner et al. (2021) J. Cleaner Production; Nat. Geographic (2019)
These bibliographic references come from the original cards. They provide context; they do not validate every numerical assumption below.
