Why is belly button fluff

I don’t get belly fluff. I had always thought it was just because of the type of clothing next to my skin and because I shower regularly.

My former husband used to and he had hair surrounding his belly button. I used to marvel at this phenomenon.

Surely the shape of a belly button has some influence on fluff collection. 

I don’t get belly fluff. I had always thought it was just because of the type of clothing next to my skin and because I shower regularly.

My former husband used to and he had hair surrounding his belly button. I used to marvel at this phenomenon.

Surely the shape of a belly button has some influence on fluff collection. 

ArchaeC said:

My former husband used to and he had hair surrounding his belly button.

I have a hairy chest / belly and the hairs actually spiral around the belly button. It acts as a vortex of a kind and I notice that when I wear soft cotton tops that the material is almost scraped by the hairs and releases fluff that slowly migrates towards the belly button.

When I wear a less soft material (eg gym t-shirt) then there is no fluff to release and I don't get any build up.

It seems a design flaw to me - the belly button is a bit of a vulnerable area for infection to enter the body and it acts as a trash collecter for the belly area. It work this way with both a bit of a pot belly and also with a six pack.