Always blue?
Mine reflects the color of fabric I wear as a t-shirt or shirt but I shower about 3 times a day and this gives little opportunity for bacteria or mould to grow and change this.
The BBC did a bit of research on this very subject: https://www.bbc.com/future/article/20150709-the-curious-truth-about-belly-button-fluff
Mine reflects the color of fabric I wear as a t-shirt or shirt but I shower about 3 times a day and this gives little opportunity for bacteria or mould to grow and change this.
The BBC did a bit of research on this very subject: https://www.bbc.com/future/article/20150709-the-curious-truth-about-belly-button-fluff
I shower about 3 times a day
That seems an awful lot. But nice if you are getting into crisp, freshly washed sheets, especially Egyptian cotton.