Clean P-Trap & Vertical Drain Pipe

What happens here

While the silicone on the new pop-up assembly sets, clean the disconnected P-trap components. Use a rag, screwdriver, or other suitable tool to push out and remove all accumulated hair, soap scum, and debris from inside the P-trap pieces. Also, use a tool like a screwdriver to dislodge and pull out the significant amount of hair and grime visible in the vertical drain pipe directly beneath the sink. Ensure all components are free of obstructions.

Goal: Clean the removed P-trap components and the vertical drain pipe thoroughly to remove accumulated hair and gunk.