Start with safe, mechanical options: remove and clean the stopper, pull visible hair and debris, and flush with hot water. A plunger can help dislodge soft blockages when you create a tight seal and use steady, controlled plunges rather than quick splashes.
A hand auger (drain snake) is often the best next step for sink, tub, and shower clogs. Feed the cable slowly, rotate to break through buildup, then retrieve debris and flush thoroughly. For kitchen lines, mild degreasing with hot water and appropriate, pipe-safe cleaners can help reduce grease films without damaging plumbing.
Avoid harsh chemical drain openers as a first choice. They can generate heat, degrade certain pipes, harm fixtures, and may not fully remove the clog—often leaving a narrowed passage that clogs again. If you have frequent backups, multiple fixtures affected, or suspect a main-line issue, professional evaluation is safer and more effective.