How do you unblock a sink pipe?

To unblock a sink pipe, you can try a baking soda and vinegar solution followed by hot water.

Here's a step-by-step guide:

1. Clear Standing Water: Remove any standing water from the sink. This allows the cleaning solution to directly target the clog.
2. Baking Soda: Pour about 1 cup of baking soda down the drain.
3. Vinegar: Follow the baking soda with 1 cup of vinegar.
4. Cover the Drain: Immediately cover the drain with a stopper or plug. This will contain the fizzing reaction and force the mixture down into the clog.
5. Wait: Let the mixture fizz and react for about 20-30 minutes. This allows the baking soda and vinegar to break down the clog.
6. Flush with Hot Water: After waiting, remove the stopper and flush the drain with hot water from the tap for several minutes. This will help to clear any remaining debris.

If the clog persists, you may need to repeat the process or try alternative methods such as using a plunger, drain snake, or chemical drain cleaner (use with caution and follow product instructions).