Why Is My Toilet Seat Turning Blue? (EXPLAINED)

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The new phenomenon causing toilet seat cover to turn blue is causing confusion as to what might be the cause behind it. Generally, Elevated levels of estrogen and progesterone have been known to alter pH and bacterial flora in the human body raising the condition of acidic pH in both sweat and urine, causing toilet seats to blue.

Now there are several explanations for this phenomenon, but the main question for many is why is a toilet seat turning blue all of a sudden?

In general, toilet seats turn blue when materials making up your seat react to the antimicrobial coating on their toilet seats and cause them to change color. The blue toilet seat is a reaction widely common in pregnant women caused by elevated levels of estrogen, progesterone in pregnant women. The elevated estrogen and progesterone alter the natural balance of pH before interacting with ionized particles that make up these surfaces interact differently from other furniture or household items like clothes, turning them blue.

Needless to mention here that changes to pH levels that can turn your toilet seat blue are not exclusive to pregnancy, there may be a variety of issues to cause pH to rise or fall. 

Rare causes are linked to hormonal problems, oral medications you are taking, and in some cases, even the clothing you are wearing. This article goes through the specific reasons why your toilet seat is becoming blue in great detail.

The Complete Guide to Why Your Toilet Seat Is Turning Blue and What You Can Do About It

Why is My Toilet Seat Turning Blue?

Blue jeans, particularly new ones, may discolor our skin. That is why this is the first thought that occurs to me. However, before examining the other criteria, we must exclude this hypothesis. 

Even if you don’t recall what you were wearing that day, you’ll be able to tell whether it was the reason by how easy the seat can be cleaned. If the seat remains blue after cleaning it, immediately rule out the blue jeans hypothesis.

Certain oral and topical medicines are effective at combating germs and curing this disease. However, do not do anything without first seeing your physician.

Hormonal changes also play a significant role in this. That is why pregnant women were the most likely to report a blue toilet seat. 

The explanation for this may be due to the higher amounts of hormones produced throughout pregnancy. Thus, when the skin comes into contact with the toilet seat, a color shift may occur. This is due to the material used to coat the seat.

The science behind why your toilet seat turns blue

Chromhidrosis is a disorder in which the oils and perspiration on our bodies take on a blue or even gray hue. Lipofuscin is a kind of sweat gland that is found throughout our bodies. 

However, individuals with chromhidrosis have a greater concentration of lipofuscin, which results in the staining of sweat and body oils. If you have this disease, you will most likely see blue stains on your skin, clothing, and bed linens as well.

This is an uncommon occurrence in which nonpathogenic bacteria and perspiration combine. It is referred to as pseudochromhidrosis. When this chemical reaction occurs, discoloration may occur in regions such as the armpits. 

Apart from a blue hue, it may produce crimson or even black. As a result, we may leave a stain on the toilet seat when we use it. Indeed, you may see discoloration on adjacent surfaces, such as the bathtub.

Commonly Occurring Causes of Stain – What Can You Do About Them?

Toilet bowls discolor for a variety of causes that are not related to the cleanliness of the facility. Hard water includes minerals that may color the bowl’s vitreous china green, red, or gray. 

Water rings as well as discoloration around the bowl’s rim may form. There are so many ways these stains may be removed, such as using bleach solutions, vinegar, baking soda, and many more.

How to Clean a Toilet Seat and Why It Needs Regular Maintenance

Scrub the stains with a solution of liquid or powdered oxygen bleach and water until they disappear.

Rubbing alcohol is an excellent solvent for removing color from almost any surface. Immerse a towel or washcloth in alcohol and place it over the spot. 

Allow the alcohol to soak for several minutes before using a scrub brush or sponge to clean the area. Rep the procedure till the discoloration is removed.

Eliminate It: Wipe the disinfectant from the outside of the toilet with a paper towel, beginning at the top and working your way down. Rather than allowing them to accumulate nearby, toss those paper towels directly in the garbage.

Eliminate Discoloration: For stubborn toilet bowl stains, use a stiff-bristled toilet brush to clean the inside of the bowl and under the rim. If a rust-colored ring forms within the bowl, the cause is most likely minerals in your water supply.

Pick a good stone on a stick to avoid coming into contact with the toilet bowl with your hands. Several swipes with the pumice stone will suffice. Not to fear; since pumice is a softer stone, it will not damage the porcelain. Reconnect the water supply to the toilet and flush to thoroughly clean the bowl.

Maintaining your toilet on a consistent basis ensures that avoidable issues are avoided. Toilet maintenance safeguards houses from the typical problems like stains, as well as the associated water damage. Homeowners who do routine maintenance have fewer problems than those who do not.

Additionally, arrange expert maintenance on a regular basis to maintain the overall health of your plumbing system, which includes your toilets. 

Without this routine maintenance, avoidable issues escalate into costly repairs or replacements. Nobody wants to pay for an occurrence they might have avoided!

After cleaning the toilet, you’ll likely want to remove your gloves immediately. However, before you get there, go to the sink and thoroughly clean your gloved hands using warm soapy water. 

It’s the most effective method to avoid getting your hands filthy and to clean the gloves thoroughly. Before storing or reusing them, hang or raise them up to completely dry.

How to clean a toilet seat with vinegar and water

To the toilet bowl, pour 1/2 cup vinegar, allow to rest for several minutes, brush, and flush. Allow the vinegar to rest for an hour if you have hard water; you may need to perform some mild cleaning afterward. Add 1/2 cup borax to water, swirl it all around, and then let it sit undisturbed to erase stains.

How to clean a cracked or stained toilet bowl

Bleach, baking soda, or vinegar are all acceptable alternatives. Each of them functions perfectly well. To use the bleach:

  1. Remove the toilet seat from the toilet and soak it in a solution of bleach and water.
  2. After a few minutes, scrub until the stains are gone.
  3. Rinse it well and replace it in the toilet.
  • Clean all around bowl quickly
  • Drain down the bowl’s water level. This procedure should be used if the stain is located under the water level in your toilet bowl.
  • To remove the stain, scrape the bowl
  • Use a toilet to disinfect the mess the remainder of the toilet should be cleaned with a brush


Pregnant women’s elevated levels of estrogen and progesterone may alter the pH on their skin, which then interacts with ionized silver antimicrobial coating in toilet seats. Elevated estradiol causes sweat to become blue due to corynebacterium that colonizes around pores but changes color when reacting with other substances like oils secreted by sebum glands or bacteria found on various surfaces (such as hands). Makes sense since urine is mostly water!

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