How do I unclog a slow-draining bathroom sink myself?

Start by removing and cleaning the pop-up stopper, which is usually the main culprit. Unscrew or lift it out, then clean off the hair and soap scum buildup. That alone often solves the problem. If it's still slow, use a zip-it tool or drain snake to pull out deeper clogs. You can also try pouring boiling water down the drain, followed by baking soda and white vinegar, then more hot water after 15 minutes. As a last resort, place a bucket under the P-trap beneath the sink, unscrew the curved pipe, clean it out, and reassemble. Avoid chemical drain cleaners regularly as they can damage pipes over time.