I keep getting black gunk in my bathroom sink drain which is the result of
using soap. I was wondering if there is any type of soap that is less
prone to forming black gunk in drains? For example, would a soap with
Triclosan help, or any other type that might help? If I were to use liquid
dish soap instead of regular soap to wash my hands in the bathroom, would
this still result in black gunk buildup?

Thanks,

J.