How to Whiten a Yellowed Fiberglass Bathtub: 5 Easy Steps

AvatarByLiana Farrell Bathtub Queries

Have you noticed that your once-white bathtub is starting to look a little yellow? Don’t worry, you’re not alone. Yellowing is a common problem with fiberglass bathtubs, especially if they’re not properly cared for. But don’t despair! There are a few easy ways to whiten a yellowed fiberglass bathtub.

In this article, we’ll discuss the causes of yellowing bathtubs, as well as some simple and effective solutions. We’ll also provide tips on how to prevent your bathtub from yellowing in the future.

So if you’re ready to restore your bathtub to its former glory, read on!

Step Materials Instructions
1 1 cup of baking soda Pour the baking soda into the bathtub and let it sit for 30 minutes.
2 1 cup of hydrogen peroxide Pour the hydrogen peroxide over the baking soda and let it sit for another 30 minutes.
3 Scrub the bathtub with a brush Scrub the bathtub with a brush to remove the baking soda and hydrogen peroxide.
4 Rinse the bathtub with water Rinse the bathtub with water to remove any remaining residue.

Causes of Yellowing Fiberglass Bathtubs

There are a few different things that can cause a fiberglass bathtub to yellow.

  • Hard water: Hard water contains high levels of minerals, such as calcium and magnesium. These minerals can build up on the surface of your bathtub and cause it to turn yellow.
  • Mildew and mold: Mildew and mold can also cause a bathtub to yellow. These organisms thrive in warm, humid environments, such as a bathroom. They can produce a yellow or brown pigment that can stain the surface of your bathtub.
  • Soap scum: Soap scum is a residue that is left behind by soap and other cleaning products. It can build up on the surface of your bathtub and cause it to look yellow.
  • Chemical residue: Some chemical cleaners can also cause a bathtub to yellow. These chemicals can react with the surface of the bathtub and produce a yellow or brown stain.
  • Age: Over time, the surface of a fiberglass bathtub can start to yellow simply due to wear and tear. The sun’s UV rays can also cause the bathtub to fade and yellow.

How to Whiten a Yellowed Fiberglass Bathtub

There are a few different ways to whiten a yellowed fiberglass bathtub.

  • Remove hard water stains: Hard water stains can be removed with a vinegar and baking soda solution. To do this, mix equal parts vinegar and baking soda in a bucket. Then, pour the solution over the stained area of the bathtub. Allow the solution to sit for 15-20 minutes. Finally, scrub the area with a brush or sponge.
  • Remove mildew and mold: Mildew and mold can be removed with a bleach solution. To do this, mix 1 part bleach with 3 parts water in a bucket. Then, pour the solution over the affected area of the bathtub. Allow the solution to sit for 15-20 minutes. Finally, scrub the area with a brush or sponge.
  • Remove soap scum: Soap scum can be removed with a commercial soap scum remover. To do this, follow the directions on the product label.
  • Remove chemical residue: Chemical residue can be removed with a commercial degreaser. To do this, follow the directions on the product label.
  • Restore the shine of your bathtub: Once you have removed all of the stains and buildup from your bathtub, you can restore the shine by using a commercial bathtub cleaner or polish. To do this, follow the directions on the product label.

Tips for Whitening a Yellowed Fiberglass Bathtub

  • Be sure to wear gloves when cleaning your bathtub. This will protect your hands from the harsh chemicals that are used in some cleaning products.
  • Test any cleaning solution on a small, inconspicuous area of the bathtub before using it on the entire surface. This will help you to avoid damaging the bathtub.
  • Rinse the bathtub thoroughly after cleaning it. This will remove any residual cleaning solution and prevent it from drying on the surface of the bathtub.
  • Dry the bathtub thoroughly after cleaning it. This will help to prevent the formation of new stains and buildup.

By following these tips, you can easily whiten a yellowed fiberglass bathtub and restore it to its original shine.

A fiberglass bathtub is a popular choice for many homeowners because it is durable, affordable, and easy to maintain. However, over time, fiberglass bathtubs can start to yellow. This can be due to a number of factors, including hard water, mildew and mold, soap scum, chemical residue, and age.

In this article, we will discuss the causes of yellowing fiberglass bathtubs and provide tips on how to whiten them. We will also discuss some of the best products on the market for whitening fiberglass bathtubs.

Causes of Yellowing Fiberglass Bathtubs

There are a number of factors that can cause a fiberglass bathtub to yellow. These include:

  • Hard water: Hard water contains high levels of minerals, such as calcium and magnesium. These minerals can build up on the surface of the bathtub and cause it to turn yellow.
  • Mildew and mold: Mildew and mold can also cause a bathtub to yellow. These organisms thrive in warm, humid environments, such as a bathroom. They can produce a yellow or brown pigment that can stain the surface of the bathtub.
  • Soap scum: Soap scum is a residue that is left behind by soap and other cleaning products. It can build up on the surface of the bathtub and cause it to look yellow.
  • Chemical residue: Some chemical cleaners can also cause a bathtub to yellow. These chemicals can react with the

How To Whiten A Yellowed Fiberglass Bathtub?

Fiberglass bathtubs are a popular choice for many homeowners because they are durable, affordable, and easy to clean. However, over time, fiberglass bathtubs can start to yellow due to a variety of factors, including:

  • Hard water deposits
  • Soap scum
  • Mildew
  • Body oils

If your fiberglass bathtub has started to yellow, there are a few things you can do to whiten it and restore its original appearance.

1. Use a vinegar and water solution

Vinegar is a natural disinfectant and deodorizer that can help to remove hard water deposits, soap scum, and mildew from your bathtub. To use a vinegar and water solution, simply mix equal parts vinegar and water in a bucket. Then, use a sponge or cloth to apply the solution to the inside of your bathtub. Let the solution sit for several minutes, then rinse it off with warm water.

2. Use a commercial bathtub cleaner

If the vinegar and water solution does not remove all of the yellowing from your bathtub, you can try using a commercial bathtub cleaner. Be sure to follow the directions on the product label carefully.

3. Use a baking soda and peroxide solution

Baking soda is a mild abrasive that can help to remove tough stains from your bathtub. To use a baking soda and peroxide solution, simply mix equal parts baking soda and peroxide in a bucket. Then, use a sponge or cloth to apply the solution to the inside of your bathtub. Let the solution sit for several minutes, then rinse it off with warm water.

4. Use a pumice stone

A pumice stone is a natural abrasive that can help to remove stubborn stains from your bathtub. To use a pumice stone, simply wet the stone and gently rub it against the inside of your bathtub. Be careful not to use too much pressure, as you could damage the fiberglass.

5. Use a commercial bathtub brightener

If you have tried all of the above methods and your bathtub is still yellow, you may need to use a commercial bathtub brightener. Be sure to follow the directions on the product label carefully.

6. Protect your bathtub from future yellowing

Once you have whitened your bathtub, you can take steps to protect it from future yellowing. Here are a few tips:

  • Use a vinegar and water solution to clean your bathtub regularly.
  • Avoid using harsh chemicals on your bathtub.
  • Rinse your bathtub thoroughly after each use.
  • Dry your bathtub after each use.

By following these tips, you can help to keep your fiberglass bathtub looking white and bright for years to come.

Tips for Preventing Yellowing Fiberglass Bathtubs

Here are a few tips for preventing your fiberglass bathtub from yellowing:

  • Use a vinegar and water solution to clean your bathtub regularly. Vinegar is a natural disinfectant and deodorizer that can help to remove hard water deposits, soap scum, and mildew from your bathtub.
  • Avoid using harsh chemicals on your bathtub. Harsh chemicals can damage the fiberglass and cause it to yellow.
  • Rinse your bathtub thoroughly after each use. This will help to remove any soap residue that could cause the bathtub to yellow.
  • Dry your bathtub after each use. This will help to prevent the growth of mold and mildew.

By following these tips, you can help to keep your fiberglass bathtub looking white and bright for years to come.

When to Replace Your Fiberglass Bathtub

There are a few signs that indicate that it may be time to replace your fiberglass bathtub. These include:

  • The bathtub is severely damaged. If the bathtub has cracks, chips, or other damage, it is no longer safe to use and should be replaced.
  • The bathtub is leaking. If the bathtub is leaking, it can damage your home’s foundation and cause other problems.
  • The bathtub is no longer functional. If the bathtub is difficult to clean or use, it may be time to replace it with a new one.

If you are not sure whether or not it is time to replace your fiberglass bathtub, you can consult with a plumber or other home improvement professional.

Fiberglass bathtubs are a popular choice for many homeowners because they are durable, affordable, and easy to clean. However, over time, fiberglass bathtubs can start to yellow due to a variety of factors. Fortunately, there are a number of ways to whiten a yellowed fiberglass bathtub. By following the tips in this article, you can keep your fiberglass bathtub looking white and bright for years to come.

How can I whiten a yellowed fiberglass bathtub?

There are a few different ways to whiten a yellowed fiberglass bathtub. Here are a few of the most common methods:

  • Use a commercial bathtub cleaner. Many commercial bathtub cleaners contain bleach or other harsh chemicals that can help to remove the yellowing from your bathtub. Be sure to follow the directions on the product label carefully.
  • Make a paste of baking soda and water. Baking soda is a mild abrasive that can help to remove dirt and grime from your bathtub. To make a paste, mix equal parts baking soda and water. Apply the paste to the yellowed areas of your bathtub and let it sit for several hours. Rinse the paste off with warm water and dry the bathtub thoroughly.
  • Use a vinegar and water solution. Vinegar is a natural disinfectant and cleaning agent that can help to whiten your bathtub. To use vinegar, mix equal parts vinegar and water in a bucket. Apply the solution to the yellowed areas of your bathtub and let it sit for several hours. Rinse the solution off with warm water and dry the bathtub thoroughly.
  • Use a lemon and baking soda solution. Lemon juice is a natural bleaching agent that can help to whiten your bathtub. To use lemon juice, mix equal parts lemon juice and baking soda in a bucket. Apply the solution to the yellowed areas of your bathtub and let it sit for several hours. Rinse the solution off with warm water and dry the bathtub thoroughly.

What are some things to avoid when whitening a fiberglass bathtub?

When whitening a fiberglass bathtub, there are a few things to keep in mind to avoid damaging the tub.

  • Do not use abrasive cleaners or scouring pads. Abrasive cleaners and scouring pads can scratch the surface of your bathtub, making it more likely to yellow in the future.
  • Do not use harsh chemicals. Harsh chemicals, such as bleach, can damage the finish of your bathtub.
  • Do not leave the cleaning solution on the bathtub for too long. Leaving the cleaning solution on the bathtub for too long can cause the finish to become damaged.
  • Rinse the bathtub thoroughly after cleaning. Be sure to rinse the bathtub thoroughly after cleaning to remove any residue from the cleaning solution.

How often should I whiten my fiberglass bathtub?

The frequency with which you need to whiten your fiberglass bathtub will depend on how often you use it and the level of yellowing. If your bathtub is not heavily used and does not show much yellowing, you may only need to whiten it once or twice a year. However, if your bathtub is heavily used and is showing a lot of yellowing, you may need to whiten it more often.

What are some other ways to keep my fiberglass bathtub clean?

In addition to whitening your fiberglass bathtub, there are a few other things you can do to keep it clean:

  • Rinse the bathtub after each use. This will help to remove any dirt or grime that may build up on the surface of the bathtub.
  • Wipe down the bathtub with a damp cloth every few days. This will help to remove any dust or debris that may have accumulated on the surface of the bathtub.
  • Scrub the bathtub with a mild abrasive cleaner once a week. This will help to remove any stubborn dirt or grime that may have built up on the surface of the bathtub.
  • Deep clean the bathtub once a month. This will help to remove any built-up soap scum or hard water deposits.

By following these tips, you can keep your fiberglass bathtub looking clean and white for years to come.

there are a few different ways to whiten a yellowed fiberglass bathtub. You can use a commercial cleaner, a homemade cleaner, or a natural cleaner. Be sure to test the cleaner in an inconspicuous area before using it on the entire bathtub. You should also wear gloves and eye protection when using any type of cleaner. With a little elbow grease, you can easily whiten your bathtub and make it look like new again.

Here are some key takeaways to remember:

  • Yellowing is caused by a buildup of soap scum, mineral deposits, and body oils.
  • Commercial cleaners are effective but can be harsh on your skin and the environment.
  • Homemade cleaners are a good option if you want a more natural solution.
  • Natural cleaners, such as baking soda and vinegar, are gentler on your skin and the environment but may not be as effective as commercial cleaners.
  • Be sure to test the cleaner in an inconspicuous area before using it on the entire bathtub.
  • Wear gloves and eye protection when using any type of cleaner.

Author Profile

Liana Farrell
Liana Farrell
Liana Farrell is the owner of toiletty.com. She is a mom of two and is very passionate about home improvement.

Liana has ten years of home improvement experience, and in her own words, she said: “I love improving the home, and I’m very passionate about keeping the home in the best possible condition. I love it!”

Liana Farrell balances beauty and functionality when she goes about her home improvement jobs.