구름방울
날짜를 따로 정하진 않고 칫솔모가 벌어질 것 같으면 바로 바꿔주네요
The usually recommended replacement period is said to be 2-3 months.
I heard that if the bristles spread out, the cleaning power decreases as well.
So I have set the 1st of every month as the day to change my toothbrush.
How do you Unpa members handle this?