Some of the refills are leaking

Hi, I've noticed it is more liquid like water now and it can drip, previously it was like gel type and I can see the difference after one pack finished. Now even two pack used and it is not as white as before

I feel like incomplete without using it daily especially when I see results of my teeth, they’re whiter than usual. Obviously works and ordered more n more refill pens 🤍

More convenient than going to dentist

Maintaining my teeth