oral care
Castor bean oil bristles: are they actually plastic-free?
Castor bean oil bristles are sold as the plant-based brush that finally ditches plastic. The chemistry says otherwise. Here is what the label hides.
the journal
field notes
Evidence, standards, and the everyday swaps that lower your family's toxic load. No greenwashing.
oral care
Micro vs nano hydroxyapatite: what the label leaves out
Some toothpastes say hydroxyapatite. Some say nano hydroxyapatite. One rebuilds enamel underneath the surface. The other just polishes the top.
oral care
Are toothbrush bristles plastic?
Almost every toothbrush bristle is plastic. Even the bamboo ones. Here is what they are really made of, and whether they shed microplastics into you.
oral care
The Best Natural Toothbrush in 2026 (an honest look at the options)
The best natural toothbrush is almost never the one labelled natural. Most hide plastic exactly where it matters. Here is how to spot the fakes.
oral care
Micro vs nano hydroxyapatite: what the label leaves out
Some toothpastes say hydroxyapatite. Some say nano hydroxyapatite. One rebuilds enamel underneath the surface. The other just polishes the top.
oral care
Micro vs nano hydroxyapatite: what the label leaves out
Some toothpastes say hydroxyapatite. Some say nano hydroxyapatite. One rebuilds enamel underneath the surface. The other just polishes the top.
oral care
Castor bean oil bristles: are they actually plastic-free?
Castor bean oil bristles are sold as the plant-based brush that finally ditches plastic. The chemistry says otherwise. Here is what the label hides.
oral care
Castor bean oil bristles: are they actually plastic-free?
Castor bean oil bristles are sold as the plant-based brush that finally ditches plastic. The chemistry says otherwise. Here is what the label hides.
oral care
Are toothbrush bristles plastic?
Almost every toothbrush bristle is plastic. Even the bamboo ones. Here is what they are really made of, and whether they shed microplastics into you.
oral care
Are toothbrush bristles plastic?
Almost every toothbrush bristle is plastic. Even the bamboo ones. Here is what they are really made of, and whether they shed microplastics into you.
oral care
The Best Natural Toothbrush in 2026 (an honest look at the options)
The best natural toothbrush is almost never the one labelled natural. Most hide plastic exactly where it matters. Here is how to spot the fakes.
oral care
The Best Natural Toothbrush in 2026 (an honest look at the options)
The best natural toothbrush is almost never the one labelled natural. Most hide plastic exactly where it matters. Here is how to spot the fakes.