wrong products can scratch or damage the finish. Before tackling bathtub discoloration, it’s important to have a plan, since different stains and materials require different cleaning approaches and sometimes a bit of trial and error to find the most effective solution. In this post, bath renovation expert The Bathroom Store discusses three of the most common causes of bath tub discoloration. We will cover common causes and solutions for bath tub discoloration, including brown stains, rust, and hard water stains.
Bathtub Materials and Discoloration
When it comes to keeping your bathtub looking spotless, the material of your tub makes all the difference in how you tackle bathtub stains and discoloration. Fiberglass tubs, acrylic bathtubs, and ceramic tubs each have their own cleaning needs, and using the wrong cleaning solution or method can do more harm than good. For example, abrasive cleaners should be avoided on fiberglass tubs and acrylic bathtubs, as they can scratch and dull the surface, making stains and soap scum even harder to remove over time.
Instead, opt for a gentle approach. Start by wiping down the surface with a damp sponge or microfiber cloth to lift away any loose dirt or grime. For stubborn bathtub stains or hard water stains, create a paste using baking soda and a splash of white vinegar. Apply this cleaning solution to the affected areas and let it sit for five minutes before gently scrubbing with a non-abrasive sponge. This combination is effective at breaking down soap scum and mineral deposits without damaging your tub.
If you’re dealing with particularly tough stains, a mixture of hydrogen peroxide and baking soda can help. Apply the paste to the stain, let it sit, and then rinse thoroughly with cold water. Always test any new cleaning product or homemade solution on an inconspicuous area of your tub first to ensure it won’t cause discoloration or surface damage.
Acrylic bathtubs require extra care—avoid acidic chemicals like bleach, which can cause yellowing or weaken the material. Instead, stick to mild solutions such as diluted white vinegar and water, and use a soft scouring pad only when necessary. After cleaning, rinse the tub well to remove any residue and wipe it dry with a microfiber cloth to prevent water spots and bacteria buildup.
Regular maintenance is key to preventing stains and keeping your bathtub clean. After each bath or shower, use a squeegee to remove excess water and wipe down the surface with a cloth. This simple process helps prevent the buildup of soap scum, hard water stains, and bacteria, making your cleaning routine much easier in the long run.
If you live in an area with hard water, you may need to clean your tub more frequently to keep mineral deposits at bay. And if you’re considering a bathroom remodeling project, consulting with a professional can help ensure your new bathtub is installed and maintained properly for years of sparkling, stain-free use.
By understanding the common causes of discoloration and using the right cleaning products and techniques for your specific tub material, you can keep your bathroom looking fresh and inviting—no matter what life throws at it.
Soap Scum
Soap scum is a filmy substance with a light gray discoloration caused by soap mixing with hard water. Installing a water softener may get rid of this problem. An easier solution is switching to liquid soap. Liquid products, such as body wash, are typically composed of a gentle surfactant instead of a true soap solution — making them less likely to cause soap scum. If the soap scum problem is mild, you may simply scrub it away every week to avoid stubborn buildup, but keep in mind that soap scum can be tricky to remove if left for too long. To prevent this, it’s important to clean the tub regularly to stop soap scum from accumulating. You can use cleaners such as borax for this job. Experts also suggest using gentle cleaning methods like baking soda paste or white vinegar to safely remove soap scum without damaging your tub’s surface.
Mildew Stains
If you only use your bathtub for showering, you may fail to notice mildew on the side of the bathtub. This part of the tub is typically hidden from view by the shower curtain liner, which also contributes to the high humidity in this area and creates an ideal situation for mildew to grow. Keeping your tub clean is essential to prevent mildew growth and maintain a hygienic bathroom environment. If you want to ditch the shower curtain, consider installing a glass door during your next bathroom remodel.
Many common bathroom cleaners are effective at removing mildew stains. For instance, those that contain bleach can help eliminate mildew as you scrub the stains off. Just make sure not to get the bleach on any chrome fittings in your tub.
Hard Water
Hard water can leave limescale deposits and build up on your tub over time, creating a raised texture and an odd color. Limescale can usually be removed with the help of cleaners and elbow grease. When using strong cleaning agents, be sure to open windows for proper ventilation to keep your bathroom safe and fresh.
The Bathroom Store offers a wide range of bathroom remodeling services, including shower installation, floor installation. Our team works hard to ensure the best design, storage and accessibility for every bathroom we renovate. Call us at (701) 223-1008 or fill out our contact form to request a consultation.
Keeping your house organized and clean, including regular bathtub maintenance, helps create a healthier home environment for you and your family.
Colorful Stains
Colorful stains on your bathtub—whether red, pink, brown, or even black—can be both unsightly and stubborn to remove. These stains often result from a combination of soap scum, hard water deposits, and the growth of mold or mildew, each leaving its own distinct mark on tub surfaces. For example, pink stains are commonly caused by bacteria thriving in moist environments, while brown or red bathtub stains may be due to iron or other minerals in hard water. Black stains often indicate mold or mildew buildup, especially in areas with poor ventilation.
To tackle these colorful stains, start by identifying the source. If hard water is the culprit, using a solution of white vinegar and warm water in a spray bottle can help dissolve mineral deposits. For soap scum and mildew, a baking soda paste applied to the affected areas and scrubbed with a soft brush can lift stubborn stains without scratching the surface. Mold and mildew may require a stronger cleaning product, such as a commercial cleaner or a diluted bleach solution—just be sure to rinse thoroughly and ventilate the bathroom by opening windows.
Regular cleaning and drying of your bathtub after use can help prevent colorful stains from returning. By choosing the right cleaning products and techniques for each type of stain, you can restore your bathtub’s appearance and keep it looking fresh and inviting.
