Best Cleaner for Fiberglass Tub

Best Cleaner for Fiberglass Tub Reviews With Buying Guide

After a long tiring day, when we come back home, the first thing we think about is to take a shower for relaxation and rejuvenation. It’s not going to be a great experience when you discover your fiberglass bathtub, windows, tile, and grout are full of stains and spots.

It’s always necessary to clean your bathroom to maintain hygiene and freshness for your relaxation. As the market is flooded by plenty of cleaner options, it’s quite tricky to get the best cleaner that will serve your needs.

Here in this review, we will be comparatively discussing the top 8 cleaners, from where you can choose the right one for you.

Best 8 Cleaners for Fiberglass Tub in 2022:

To give you a clean, fresh bathing experience, shower cleaner companies are coming up with the best of features. Here, we will be discussing the top 8 fiberglass cleaners that are dominating the market right now.

1. Bring It On Cleaner

Scared of bleach cleaner? No more, because this shower cleaner from Bring It On comes with oxygen bleach, which is safe and non-toxic, unlike chlorine bleaches. That’s why this one is a safe and secure solution to use at your home, concerning the safety of kids and pets too.

Because of hard water and tannins, your bathtub, door, shower head, and bathroom floor easily get dirty and lose freshness. Whether they are full of stains, spots, or have turned yellowish, this cleaner is formulated to erase the hardest stains effectively. This multipurpose cleaner can also be used for tile and grout as well.

As you know, hard water can contain high minerals like calcium, magnesium, and limestone, they can easily cause stains and spots. Sometimes it can also be caused by the metal hardware of your bathroom. So, Bring It On works like all one solution for mineral and rust stains.

To give you a fresh feeling, it has a fresh mint smell. Not only will your bathroom look new after you use this cleaner, but it also will smell just as fresh and nice.

Special Features
  • Contains oxygen bleach
  • Comes with a fresh mint scent
  • Removes stains and spots of all kinds
  • Weighs 32 ounce

Buy at Amazon


2. Bio-Kleen Fiberglass Cleaner M00605

Are you looking for a quick cleaning solution for your fiberglass stains and spots? Then say hello to our second pick from Bio-Kleen, which is a multipurpose cleaner for all of your home needs.

To increase surface penetration, it comes with a clinging spray that needs to be put on gel. It helps to penetrate and dissolve the spots in seconds.

This multipurpose cleaner can be used for fiberglass tubs, boats, metals, RVs, props and outboards, rims and tires, sinks, pontoons, toilet seats and bowls, shower stalls, swimming pools, stainless steel fixtures, tiles and grouts made of ceramic, and much more. Simply, it provides you sparkling cleaning experience.

However, if you want something excellent for automatic washing operations, this Bio-Kleen cleaner won’t disappoint you. It has been formulated in a way that you can use it for cleaning multiple surfaces without even worrying about safety measures. This cleaner is environmentally friendly and child friendly too.

Though this product doesn’t have a refreshing fragrance, it doesn’t even smell bad either. You will most probably like the smell and the performance it provides once you use it.

Special Features
  • Clinging spray-on gel
  • Weighs 0.75 lbs
  • Biodegradable
  • Works well on multiple surfaces

Buy at Amazon


3. Star Brite Ultimate Fiberglass Stain Remover

If you are looking for a cleaner that is dedicatedly designed to clean stains and spots of your fiberglass tub, then Star Brite is there to meet your needs. This gel sticking formula is basically used through spraying on vertical surfaces for an effective outcome.

The gel sticks to the stains for longer, and it dissolves them easily without scrubbing. Just spray on the stains, wait until they dissolve and disappear, and then rinse. The cleaning process is as simple as that.

Though it is formulated especially for fiberglass tubs, you can also clean painted surfaces, plastic, rubber, and vinyl headliners.

This stain remover works like an ideal solution for removing the yellowish scum that originated from soap scum or hard water minerals. You might be surprised to know that it can also be used for upholstery and bolsters. The buffered formula is specially made to be safe enough while using upholstery or thread.

If you are worried about rust and tough spots of fish blood, dried leaf, then you must try this solution for an ultimate experience.

Special Features
  • Gel spray formula
  • Designed to clean spots of fish blood, dried leaf, and other tough stains
  • Safe to use for all kinds of fiberglass surfaces
  • Weighs 1.3 pounds

Buy at Amazon


4. Oh Yuk Jetted Tub Cleaner

If you are more into scientifically formulated products, then our next pick is for you. Oh Yuk Jetted cleaner is exactly what you are looking for.

It can easily break down the yuk from your tub and dissolve in minutes. Whether you need to clean a Jacuzzi, whirlpool, or any kind of bathtub, this cleaner gives you a clean, safe, and healthy experience.

Are you tired of using cleaners that take a lot of your precious time to clean the bathtub? This cleaner will get the cleaning done in just 15 minutes. Just apply the cleaner, pour water, and scrub for a little while, and your tub will be cleaned within a few minutes.

To provide you with the best cleaning experience, it has been tested in a lab; and on field experiments, the results are also superb. In every 16-ounce bottle, you are going to have four cleanings for a long-lasting experience. From jetted Jacuzzi to fiberglass tub, clean all of these with this super cleaner.

Special Features
  • Takes 15 minutes to clean
  • Quick cleaning properties
  • Scientifically tested to be effective formula
  • Every 16-ounce bottle has four cleanings

Buy at Amazon


5. Weiman Bathtub Cleaner

Here, we have a powerful tub cleaner that can instantly dissolve rust, hard water spots, soil, residue, and film without letting you scrub hard. This particular shower cleaner from Weiman is a versatile one that can be used for cleaning bathtubs, doors, pools, spas, vanities, RVs, sinks, and even fiberglass boats.

It is formulated for heavy-duty tasks, so you can rely on it when it comes to cleaning hard and tough stains, limescale, rust, and soap scum. As a non-abrasive cleaner, it will restore the natural texture and color of your fiberglass tub, bathroom while leaving them sparkling clean.

Also, it works well on porcelain and ceramic floors and tiles. Weiman gets your cleaning job done faster without leaving a single spot or scratch on the surface. It doesn’t only give you clean surfaces, but also it is formulated to beautify them with a shiny new look.

Compared to other available options in the market, Weiman goes ahead with this very feature of polishing your surfaces.

Special Features
  • Heavy-duty formula
  • Dissolves rust, hard water spots, soil, residue, and film
  • Non-abrasive
  • Weighs 16 ounce

Buy at Amazon


6. Bio Clean: Eco Friendly Hard Water Stain Remover

Remember our previous eco-friendly picks? Let’s add another great environment-friendly fiberglass bathtub cleaner to the list with this Bio Clean. It easily cleans your surface and seals the places with safety and freshness. Each pack comes in 20 oz size that can ensure your bathroom cleaning experience for a long time.

Are you worried about the stains and scum that originated from hard water minerals and soapy scum? Then worry no more because Bio Clean is determined to take care of such worries without disappointing you by any means. No harsh chemical is there to bother your kids or pets, even the smell is so refreshing.

You can easily clean your shower door, windows, windshields, chrome tiles, toilets, and much more with this super cleaner. This particular product is designed to make it a perfect solution for home cleaning needs while ensuring safety for your family along with the environment.

Because of its biodegradability and non-toxic properties, one can easily pick it up as the right choice for fiberglass bathtub cleaning without even thinking twice.

Special Features
  • Comes in 20 oz size
  • Eco-friendly formula
  • Designed to remove hard water stains
  • Cleans versatile materials

Buy at Amazon


7. RMR-86 Instant Mold and Mildew Stain Remover Spray

Our penultimate pick could be the right choice for those who want to get rid of mildew stains and stubborn mold. This instant spray effectively removes stains of mold and mildew. It works faster than many other sprays available in the market.

Worried about scrubbing? Well, this stain remover doesn’t even require scrubbing. It’s all about spraying directly on the stained areas. Once you apply it to your bathtub, it just takes seconds to dissolve and eliminates those stains effortlessly.

Whether the stains are hardened on your bathroom tiles, under the sink, grout lines, or on shower doors, this all-in-one solution works like magic everywhere. It is a safe choice for even cleaning decks, vinyl siding, wood, drywall, brick walls, concrete floors, and kitchen where mildew and mold tend to grow.

When it comes to the smell of it, you will enjoy a good fragrance that is left behind after using it. So, you don’t need to worry about the bad odor that usually comes with other harsh sprays.

Special Features
  • Formulated to remove mold and mildew stains
  • Ready to use formula
  • Doesn’t require scrubbing
  • Weighs 32oz

Buy at Amazon


8. Rejuvenate Scrub Free Soap Scum Remover

So, we are about to end the list of fiberglass tub cleaners with this one from Rejuvenate. Again, this is a scrub-free option for you so that you don’t have to make your hands feel tiring. To get a streaked finish, you just need to spray and rinse, as simple as that.

It comes with a non-abrasive, non-toxic formula to give you a pretty pleasant cleaning experience. Coming in a 24-ounce pack, Rejuvenate is there to clean your fiberglass bathtub along with glass, ceramic tile, plastic, chrome, porcelain, and many more surfaces.

This product is specially designed to remove the soap scum and yellowish spots of your fiberglass tub. Talking about safety, it is formulated in a way that kids and pets will not be harmed by its ingredients if accidentally they get exposed to its substances.

If you are always in a hurry, then welcome this cleaner to your home that only takes 3 minutes to clean all the scum and stains once you spray it on messes. You don’t even need to worry about the odor, as it is a fragrance-free option. Get ready to be surprised to know that our last pick has also won multiple awards as the best cleaner.

Special Features
  • Comes with a non-abrasive formula
  • Weighs 24 ounce
  • Scrub-free spray
  • Removes stains within 3 minutes

Buy at Amazon


Factors Need to Consider While Choosing the Best Cleaner for Fiberglass Tub:

A clean, fresh, and safe shower are what you need to ensure your sanitary health and refreshing mind. In order to do that, you must give importance to some key factors while choosing the top cleaner for your bathtub.

Ease of Use and Safety

Would you like to spend your valuable bucks on something that takes a whole day long to clean your tub, floors, and doors? No way! So, while picking up the cleaner, make sure it is efficient and easy to use. It’s better to select the one that can minimize your time for scrubbing and wipe.

Multipurpose or Not

When you get several solutions from just one option, then it’s definitely worth your money. When it comes to shower cleaners, some of them can offer you multipurpose cleaning for different surfaces of your house like floors, doors, windows, not just fiberglass tubs.


To be very honest, we all care about the smell of a product. And when you are buying a shower cleaner, it must smell good. So, you better check the aroma of your cleaner.


It’s better to pick a cleaner that is environmentally friendly and safe to use at home. For your own good, try to avoid cleaners that have harsh chemical components in them.

How Do You Tell If a Bathtub Is a Fiberglass or Acrylic One?

Acrylic is basically a plastic material that is heated and stretched over a mold. Fiberglass comes with a gelcoat mixture that is sprayed over a mold. The first thing you need to notice is the edges of the tub; acrylic bathtubs basically have thinner edges. On the other hand, fiberglass ones are comparatively thicker.

Fiberglass tubs are usually white in color, where acrylic ones come in various color options. Acrylic tubs have smoother finishing and feel warmer compared to their fiberglass counterparts. Also, acrylic tubs are more durable than fiberglass ones, and they don’t get chipped, cracked, or faded that easily.

Why Do Fiberglass Tubs Turn Yellow?

Fiberglass bathtubs can turn yellowish because of repeated exposure to hard water or soap scum. Based on where you live and what kind of soap you use, it can affect your fiberglass tub to turn yellow sooner or later.

Hard water basically contains high mineral contents like Magnesium and Calcium, which cause the bathtub to turn yellow.

Hardened soap scum also affects your bathtub when they are left uncleaned for days. With the repeated exposure of soap scum on your fiberglass tub, it gets yellowish after a certain period of time.

Sometimes it can be caused by tannins in the water. Some sources of water hold decayed organic matter like tannins. Though they are not harmful, they are responsible for turning the water yellowish and for making a kind of unpleasant odor as well.

No matter what caused the yellowing of your bathtub, you need to use the right cleaner to get rid of it.

How Do You Get Old Stains Out of a Fiberglass Tub?

If you want to get rid of old stains from your fiberglass, then you can either go for home remedies or a specific cleaner available in the market. These stains are not going to be faded away if you simply try to scrub them with a scrubber. Rather try some home ingredients or fiberglass cleaner to get the job done.

Now, if you are a fan of home remedies, then simply make a mixture of baking soda and water. Take a towel soaked in vinegar, dip it in the mixture. You have to wait for one hour before you can rub on the stains with a cloth or sponge. Keep rinsing and wiping until they are faded away and finally clean with a microfiber cloth.

On the other hand, the market is available with fiberglass tub cleaners. Reading this review might help you to decide the right cleaner to make your tub look like new.

Can You Use Vinegar or Bleach on Fiberglass?

You need to be cautious while using chemicals to clean your fiberglass tub. Some people use bleach for cleaning their tub, but they must know it’s a harsh chemical that is not good for fiberglass.

So, it’s better to avoid bleach; rather, you can use other household mild acids like vinegar. It’s safe and doesn’t come with harmful effects.

While cleaning your fiberglass tub, mix your mild acid, vinegar with some dishwashing soap or baking soda. Vinegar helps you to clean old stains easily when it is mixed with the soapy mixture.


What Should I Avoid When Cleaning a Fiberglass Tub?

While cleaning your fiberglass tub, you should keep in mind some of the precautions that you need to avoid. It’s better to avoid cleaning products that are abrasive. Scouring powder is an example of such an abrasive ingredient that you should avoid as it can damage your tub.

You should also avoid harsh chemicals when you clean your tub. Bleach is a harsh one; chlorine bleach, to be specific. There’s nothing wrong with using oxygen bleach as it’s not harmful like chlorine bleach. You must also avoid using cleaners that are not biodegradable that may cause harmful effects to your kids and pets.

Is There Any Different Procedure to Clean Fiberglass Tub with Textured Bottom?

If you don’t want to spend your money on market cleaners, then don’t worry. There is a home remedy for this, which is easily applicable. If you want to clean the textured bottom of your bathtub, make a thick paste of water and baking soda. Then you need to rub it on the textured bottom of your fiberglass tub.

You can use a clean sponge in order to rub that and finally clean it with some eraser. It might take up to 3 erasers to clean a dirty shower bottom.


We all want to have clean, fresh, and odor-free washroom. To ensure that, we need to clean our bathroom tub, floor, tiles, grouts, and other surfaces with a cleaner that can get the job done. We hope this review about the fiberglass tub cleaner helped you to decide the right cleaner for your specific needs.