That baking soda and vinegar trick is mostly for light maintenance, not a real clog. The fizz looks cool but it doesn't actually break up the gunk. For a truly blocked sink, you need to get the physical stuff out. A simple plunger made for sinks often works way better than people think, you just have to seal it over the drain properly. If that fails, a drain snake is the real answer, it pulls the hair and grease right out. Pouring chemicals down there just risks hurting your pipes and makes a nasty soup.

Powdered graphite" sounds like one of those old fixes that just works, doesn't it?

My old phone's battery swelled up like a balloon, so maybe I'm part of the problem.