Just mineral or ground rocks work just as well. I hate my wife’s soft face scrub, i need that shit that feels like I’m scrubbing my face with sandpaper, to exfoliate well. They sell one that has ground up lava rock, i love that shit, and it makes me wonder why anyone ever thought plastic bits was a good idea
Tooth enamel is ~5 on mohs scale. Quartz, the most common kinda rock (afaik), is ~7. You’re correct that enamel is harder than steel though, since it’s ~4? Disclaimer: all of these numbers are from a quick google search.
Fun fact, this is why we know ancient people used to make bread - the way they separated wheat from the chuff included dropping it on the ground, which led to sand being in the bread and consequently destroying their teeth over a lifetime of eating it.
My ex would use St. Ives “Apricot Exfoliant” or something, which has powdered apricot pits and walnut shells. Those are waste products that I wouldn’t expect to cause problems but who knows.
Just mineral or ground rocks work just as well. I hate my wife’s soft face scrub, i need that shit that feels like I’m scrubbing my face with sandpaper, to exfoliate well. They sell one that has ground up lava rock, i love that shit, and it makes me wonder why anyone ever thought plastic bits was a good idea
They probably had some extra plastic to offload lol.
“What do we do with all these old bottles sir?”
But lava rock grinds are not part of the industrial waste stream repurposed for profit. This is innovation!
Well, rocks in toothpaste would be very bad because they’d be harder than your teeth.
Harder? No. Enamel is harder than steel. It is more brittle though so don’t go chewing rocks.
Tooth enamel is ~5 on mohs scale. Quartz, the most common kinda rock (afaik), is ~7. You’re correct that enamel is harder than steel though, since it’s ~4? Disclaimer: all of these numbers are from a quick google search.
Fun fact, this is why we know ancient people used to make bread - the way they separated wheat from the chuff included dropping it on the ground, which led to sand being in the bread and consequently destroying their teeth over a lifetime of eating it.
My ex would use St. Ives “Apricot Exfoliant” or something, which has powdered apricot pits and walnut shells. Those are waste products that I wouldn’t expect to cause problems but who knows.