2 ms·
I used the same toothbrush for a year. Is this bad? How do you know when to replace it?
by 2FC00C733A55 8y ago
I used the same toothbrush for a year. Is this bad? How do you know when to replace it?
- kevmo 8y ago- when you're sick - when the bristles become less stiff (i.e. signs of wear) - or every 3 months