How To Get Rid of Pink Mold in the Shower: A Step-by-Step Guide

Pink mold in the shower often shows up as a slimy pink or orange film on tile, grout, and fixtures. Despite the name, it isn’t actually mold but a bacterial biofilm that thrives in damp, residue-heavy environments and tends to return if the underlying conditions aren’t addressed.

In this guide, we explain how to get rid of pink mold in the shower, why it keeps coming back, and how to prevent it. We also include professional insights, including This Old House plumbing and heating expert Richard Trethewey, to help you tackle the problem more effectively.

What Is Pink Mold?

Pink mold can appear in shades of pink, orange, or red, but it isn’t actually a mold. It’s a bacterial biofilm—Serratia marcescens—that forms on moist bathroom surfaces.

What makes pink mold especially persistent is how it grows. Instead of sitting loosely on the surface, it forms a thin, sticky layer that clings to materials like grout, caulk, and plastic. This biofilm can protect the bacteria underneath, which is why it often returns even after cleaning.

Pink mold thrives in environments with moisture and residue. In the This Old House segment “Cleaning Up Mold,” environmental contractor Brian Fitzsimons says that microbial growth depends on both moisture and a food source, like soap scum, body oils, and shampoo residue commonly found in showers. Bathrooms provide ideal conditions for this combination, especially in areas that stay damp between uses.

Is Pink Shower Mold Harmful?

Pink mold is not as dangerous as some mold types, but you should still address it promptly to prevent it from spreading and contaminating frequently used surfaces. It can pose health risks for individuals with compromised immune systems and can also make you sick if it comes in contact with your eyes or an open wound.

Exposure can cause irritation or infection, particularly in sensitive individuals, including:

• Eye infections if the bacteria come into contact with the eyes
• Respiratory issues in some cases
• Skin irritation for sensitive individuals
• Urinary tract infections

Identifying Pink Mold in Your Shower

Recognizing pink mold is the first step in addressing the problem. Its distinctive color makes it relatively easy to spot, but you need to know where to look and how to distinguish it from other bathroom growths.

Common Areas of Infestation

Pink mold often returns in the same areas, so recurring spots can indicate where moisture or residue is building up.

• Around drain openings
• Around showerheads and faucets
• In grout lines between tiles
• On shower curtains and liners
• Shower corners and crevices

Regularly inspecting these areas can help you catch pink mold growth early.

How To Distinguish Pink Mold from Other Bathroom Growths

While pink mold is distinctive, it’s possible to confuse it with other bathroom issues. Use this guide:

• Hard water stains tend to be white or yellowish.
• Soap scum is usually white or grayish.
• True molds are typically green, black, or gray.

Pink mold’s slimy texture and pinkish hue set it apart from these other common bathroom problems.

Essential Tools and Products for Pink Mold Removal

The right tools can make removal more effective, but technique and thoroughness matter more than the specific products you use. Here’s what you’ll need to tackle the job safely and thoroughly:

• Antibacterial laundry detergent
• Baking soda
• Bleach
• Liquid dish soap
• Microfiber towel
• Nylon bristle brush
• Respirator mask
• Rubber gloves
• Safety glasses
• Shower curtain liner
• Spray bottle
• Water

Note: Make sure to wear gloves, glasses, and a respirator when cleaning pink mold. We also recommend running your bathroom’s exhaust fan during cleaning.

Effective Removal Techniques for Pink Mold

The right approach and materials will help you effectively eliminate pink mold and restore your shower’s cleanliness. Because pink mold forms a biofilm, it can cling to surfaces and return if buildup isn’t fully removed.

Do-It-Yourself (DIY) Cleaning Solutions

Several household items can be effective against pink mold. However, they don’t all work the same way. While some help break down residue, others are better for disinfecting.

• Baking soda and dish soap: Help break down soap scum and buildup that the bacteria feed on
• Bleach solution: Can disinfect surfaces after they’ve been cleaned
• Hydrogen peroxide: Effective at killing bacteria on non-porous surfaces
• White vinegar: Useful for light cleaning, but less effective once buildup is present

Step-by-Step Removal Process

Follow these steps to tackle pink mold:

1. Put on protective gear (gloves, mask, and safety glasses).
2. Mix two tablespoons of dish soap with half a cup of baking soda.
3. Apply the mixture to affected areas with a nylon bristle brush.
4. Scrub thoroughly. Alternate scrubbing patterns from back and forth to up and down and circular to make sure the bristles reach any nooks and crannies.
5. Rinse loosened the biofilm down the drain.
6. Create a 1:1 solution of bleach and warm water in a spray bottle.
7. Spray the cleaned areas and let sit for 10 minutes.
8. Scrub again and rinse thoroughly.
9. Dry all surfaces with a clean microfiber towel.

Addressing Pink Mold on Shower Curtains

We recommend cleaning your shower curtain when you have pink mold, as bacteria can cling to the curtain and liner and reinfect your shower later:

1. Remove the curtain and liner from the rod.
2. Wash fabric curtains in the washing machine with antibacterial detergent according to the curtain’s instructions. (You can also toss in the microfiber towels you used to clean surfaces.)
3. Dispose of the plastic liner and put in a new one.
4. Hang curtains on a rack or line to dry completely before rehanging in the shower.

Removing Pink Mold From Shower Drains

Shower drains are a common source of recurring buildup due to constant moisture and trapped debris. Follow these cleaning steps:

1. Remove any visible debris from the drain opening.
2. Pour a mixture of baking soda and white vinegar down the drain.
3. Let it sit for 15 minutes, then flush with hot water.
4. Use a small brush and your dish soap solution to scrub around the drain opening.

Cleaning Pink Mold From Grout and Tiles

Grout lines are porous and can trap moisture and residue, making them more prone to recurring growth. Here’s our recommendation:

1. Make a paste of baking soda and dish soap.
2. Apply the paste to affected grout lines and let sit for 10 minutes.
3. Scrub with a stiff brush, then rinse thoroughly.

Use a bleach solution for stubborn stains. Take care to protect surrounding surfaces when using bleach.

Professional Cleaning Options

Consider hiring a professional cleaning service for severe pink mold cases or if you’re uncomfortable handling the cleanup yourself. Make sure to explain the problem to the cleaners in advance. They have specialized equipment and stronger cleaning agents to tackle stubborn pink mold infestations.

Prevention Strategies To Keep Pink Mold at Bay

Preventing pink mold goes beyond just cleaning. You also need to limit the moisture and residue that allows the bacteria to grow in the first place. Bathrooms are especially prone to recurring growth because moisture tends to linger. As Trethewey explains in This Old House Magazine, modern homes trap humidity, creating conditions where bacteria and mold can thrive.

Daily Habits To Reduce Moisture

These daily steps help reduce the time moisture sits on surfaces, limiting the environment in which bacteria need to grow:

• Dry shower surfaces after each use with a squeegee or microfiber towel.
• Fully close the shower curtain and liner after every shower so they can dry completely.
• Run the bathroom exhaust fan during and after showers to remove humid air.

Weekly Cleaning Routines

Regular cleaning removes the residue that pink mold feeds on, making it harder for biofilm to form. Take these precautions weekly:

• Clean soap scum from hard surfaces using a solution of one cup of white vinegar to one cup of water with 1 tablespoon of dish soap.
• Wash shower curtains and bath mats regularly.
• Scrub grout lines to prevent buildup of soap scum and minerals.

Long-Term Prevention Methods

Long-term prevention focuses on controlling both moisture and surface buildup, making it much harder for pink mold to return

• Fix any leaky faucets or showerheads promptly.
• Keep bathroom windows closed while the shower is wet to prevent airborne Serratia marcescens bacteria from entering the bathroom.
• Install a small dehumidifier in particularly damp bathrooms.
• Seal grout annually to reduce moisture penetration.

Our Conclusion

Pink mold typically recurs if the underlying moisture and residue aren’t addressed, so effective removal depends on thorough cleaning and preventive measures. By focusing on how and where it forms, you can reduce the chances of it coming back.