How to Remove Yellow Stain from Plastic Bathtub

Are you tired of looking at that unsightly yellow stain in your plastic bathtub every time you take a shower? Well, you’re not alone. Many people struggle with stubborn stains in their bathroom fixtures, especially plastic bathtubs. But fear not, because in this article, we will guide you through step-by-step on how to remove yellow stains from your plastic bathtub.

Understanding the Causes of Yellow Stains

Before we delve into the removal process, it’s essential to understand why yellow stains occur in plastic bathtubs. Yellow stains are usually caused by the accumulation of hard water minerals, soap scum, or even certain cleaning products. Over time, these substances can build up on the bathtub’s surface, resulting in a stubborn yellow discoloration.

Gather Your Cleaning Supplies

Now that you understand the root cause of the problem, it’s time to gather the necessary supplies to tackle the yellow stain in your plastic bathtub. Here’s a list of items you’ll need:

  • All-purpose cleaner
  • Vinegar
  • Baking soda
  • Toothbrush or scrub brush
  • Lemon juice
  • Microfiber cloth or sponge
  • Gloves (optional)

Step-by-Step Guide to Remove Yellow Stains

Now that you have everything you need, let’s dive into the step-by-step process to effectively remove yellow stains from your plastic bathtub:

1. Prepare the Cleaning Solution

Mix equal parts of vinegar and warm water in a spray bottle. Vinegar is an excellent natural cleaner that can effectively break down hard water minerals and soap scum.

2. Spray the Cleaning Solution

Spray the vinegar and water mixture generously onto the yellow-stained areas of your plastic bathtub. Ensure that the surface is thoroughly wet and let the solution sit for about 10-15 minutes, allowing it to penetrate the stain.

3. Scrub with Baking Soda

After the vinegar solution has had time to work its magic, sprinkle baking soda directly onto the stained areas. Use a toothbrush or scrub brush to gently scrub the stain in circular motions. Baking soda acts as a mild abrasive that helps lift the stain without damaging the plastic surface.

4. Rinse and Repeat if Necessary

Once you’ve scrubbed the stained areas, rinse the bathtub with warm water to remove any residue. Inspect the tub to see if the yellow stain has been fully removed. If it’s still visible, repeat the process by spraying the vinegar solution and scrubbing with baking soda again.

5. Lemon Juice Finishing Touch

If there are still remnants of the yellow stain, squeeze fresh lemon juice onto the affected areas and let it sit for a few minutes. Lemon juice contains citric acid, which is a natural bleaching agent and can help break down stubborn stains. Scrub the area gently with a toothbrush or scrub brush, then rinse thoroughly with warm water.

Preventing Future Yellow Stains

Now that your plastic bathtub is sparkling clean and free from yellow stains, it’s crucial to take preventive measures to minimize their recurrence. Here are some tips:

  • Regularly clean your bathtub with an all-purpose cleaner to prevent the buildup of hard water minerals and soap scum.
  • Wipe down the bathtub after each use to remove any residual moisture or soap residue.
  • Avoid using harsh cleaning products that can damage the plastic surface.
  • Consider installing a water softener to reduce the mineral content in your water supply if hard water is a persistent issue in your area.

By following these preventive measures, you can maintain a clean and stain-free plastic bathtub for the long term.


Removing yellow stains from your plastic bathtub doesn’t have to be a daunting task. With the right cleaning supplies and a step-by-step process, you can effectively eliminate these unsightly stains and restore the beauty of your bathroom fixture. Remember to take preventive measures to minimize the recurrence of yellow stains. Now, it’s time to put these tips into action and say goodbye to those stubborn yellow marks in your plastic bathtub!

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