ELi5 how does your bellybutton and pockets acquire so much lint?

Question

ELi5 how does your bellybutton and pockets acquire so much lint?

In: 4

Answer 1

The hairs on the skin around the belly button tend to point towards the belly button. This makes travel of “lint” easier towards (and inside) the belly button than away from the belly button. Once the lint is inside your bellybutton it gets trapped by those directional hairs.