The direct answer: a 35 gram jar of our tooth powder lasts about five weeks with twice daily brushing. That is an average from real use, not a promise. Light dippers stretch a jar toward seven weeks and enthusiastic dippers can empty one in a month.
The math behind the number
A proper dose is a light dip that picks up well under half a gram of powder. At two brushes a day, 35 grams works out to roughly 70 to 80 brushes, which lands at five weeks give or take. The dose is genuinely small because coverage comes from two minutes of brushing, not from how much powder rides in on the bristles.
What changes the number
- Wet dipping. A soaked brush picks up more powder than you need and clumps what stays behind. Shake the brush first, and the jar lasts longer and stays loose.
- Two users, one jar. A couple sharing a jar should expect two and a half to three weeks, and might prefer a jar each anyway.
- Heavy handed week one. New users dip big. It settles. Our two week switching guide covers finding the right dose.
Signs you are using more than you need
If the powder visibly cakes on the bristles or the jar drops a third in a week, you are over dipping. A light press into the surface is plenty. More powder does not clean more, it just leaves the jar earlier.
The honest note
Five weeks is an average, and averages hide variety. Your dose, your dampness discipline, and whether you share the jar all move the number. If you are consistently outside four to seven weeks, your dip size is the reason, not the jar. New to the format? What tooth powder actually is is the place to start.
This is a cosmetic product. It is not a substitute for professional dental care.