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You’ve heard of pinkish stains, black stains, brown stains, toilet rings, and other common stain colors. But has your toilet seat ever turned blue? No, it is not a sign of cleanliness! Many people, including pregnant women, have reported a blue toilet seat.

Males and females, pregnant and non-pregnant persons, have reported the blue toilet seat problem on the internet. Even though the bulk of complaints of this phenomenon comes from pregnant women, this is not the case for all.

We’re all aware that motherhood causes a slew of strange side effects, ranging from sleep disturbances to suddenly blurred eyesight to cravings for the foods we haven’t touched in years! For years, pregnant women have reported that pregnancy has prompted their toilet seats to change color across the web.

Causes of Blue Toilet Seats:

The recent phenomenon of toilet seat covers turning blue raises consternation as to what is creating it. High estrogen and progesterone levels have been shown to change pH and bacteria in our bodies. The low pH level means an acidity in urine and sweat, which causes toilet seats to turn blue.

But let’s not narrow down our discussion solely to pregnancy being the cause of these issues. Multiple other reasons can prompt your toilet seat to turn blue. Let’s discuss them!

Your Clothes:

Sometimes, new clothes like a new pair of jeans might discolor and leave marks on your skin. The color and dyes from your clothes might stick to your tighs. So when you’re sitting down on a toilet seat, the color attaches itself to the seat. This rarely happens, though.

If it’s a simple clothing-coloring issue, it will probably be gone with a simple wipe and toilet cleaner. However, if the stains are persistent, then the cause might be something internal within your body. So then you can cross out clothes as one of the issues.


Chromhidrosis is an uncommon condition that could be a potential cause of your toilet seat turning blue. Chromhidrosis is an uncommon disorder that causes colored sweat to be secreted. Black, blue, green, yellow, or brown sweat are all possibilities.

Despite the fact that Chromhidrosis is a benign condition, it can cause psychological or emotional anguish. Chromhidrosis can affect patients of all ages, but it is most obvious during the teenage. This is puberty when the apocrine glands start to secrete fluid.

 Despite the fact that the illness is recurrent, sweat coloration may lessen over time as the body makes less lipofuscin. Lipofuscin is a pigment that is believed to be to blame for the color shifts in perspiration. Individuals with Chromhidrosis may have higher levels of lipofuscin, or more oxidized lipofuscin, than most others.

In short, this disorder adds a pigment to sweat which can leave a mark on the toilet seat.


Another strong and more common cause of blue toilet seats is pregnancy. Whenever the elements that make up your toilet seat respond to the antibacterial layer of their toilet seats, the color of the seat changes. The blue toilet seat is a phenomenon that frequently occurs in women who are pregnant due to high estrogen and progesterone levels.

Increased estrogen and progesterone change the pH equilibrium prior to interacting with the ionized particles of toilet seats. The change in pH leads to making them bluer than anything else.

It’s possible that this is related to the elevated levels of hormones released during pregnancy. As a result, a huge shift may happen when the skin comes into touch with the toilet seat. This is due to the seat’s coating composition. Some toilet seats feature an antimicrobial layer that could interact with your body chemistry as it changes.

SO if you’re wondering why there are blue stains on your toilet seat but nowhere else in the house, it is probably because of the antimicrobial layer most toilets have to protect you.

Cleaning up a blue toilet seat:

Now since the bluish stains on your toilet are because of chemical reactions between your skin and the antimicrobial layer of the seat and not typical dirt or debris, they will be tougher to clean. We have a few solutions for it that you can try.

Try Rubbing alcohol for dissolving color:

The first one is to try rubbing alcohol. When it comes to removing color from surfaces, rubbing alcohol is a star. This is because of its fantastic dissolution properties. So dip a cloth in rubbing alcohol and put it over the blue stains, and leave it there for 10-15 minutes allowing the cloth to dissolve all the color.

The Magical Magic Eraser:

You can use the Magic Eraser product to get rid of stubborn blue stains as well. Simply wet the eraser and scrub until the surface is squeaky clean. Rinse the toilet with soap water afterward to eliminate any residues.

Bleach, yet again:

Bleach is yet another great choice for cleaning blue stains from toilet seats. Bleach has been in almost every toilet cleaning remedy and solution, so it comes as no surprise that it showed up here as well! Bleach is a fantastic cleanser if you’ve got a white toilet seat.

Before using bleach, put plastic sheets over the floor because you do not want it to drip on the floor. Bleach may be good for cleaning toilets but can cause serious and irreparable damage to other surfaces.

So mix equal parts of bleach and water and pour the mixture over the blue toilet seat. Leave the solution on for several minutes. Then, wipe it off.

Baking Soda and Vinegar:

Baking soda and vinegar are back yet again to the rescue! Well, it has to be here since it’s a hero at warding off all kinds of stains. And vinegar is the just-as-effective partner in this game.

Pour a few (one or two) cups of vinegar over the blue toilet seat, and then pour a heaped cup of baking soda over the stains as well. Use a brush to scrub them over the toilet seat. Keep scrubbing until the stains disappear, and then rinse it off.

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