Why Do Foam Mattress Toppers Turn Yellow – Best Tricks 2023

Have you noticed how the white foam mattress topper is slowly turning a dirty yellow color? What Causes!

For Example, you woke up this morning and saw your mattress topper was a dirty yellow. Do you need help understanding the reason for your topper’s yellow stain?

Foam mattress toppers can become discolored and stained for various reasons. Body oils and sweat are common reasons for yellow stains. When you go to sleep, your body releases oils and sweat that get absorbed by the foam. As a result, it makes a yellow stain on your toppers. Don’t worry! There are easy ways to make your mattress topper white again and prevent more yellowing.

In this article, we will look at why foam mattress toppers often turn yellow. We will also discuss how to remove and prevent yellow stains.

What causes yellow stains on Mattress Toppers?

Why Do Foam Mattress Toppers Turn Yellow

If your mattress topper is turning yellow, don’t panic. There are a few common reasons that often lead to yellow stains on foam mattress toppers.

1. Body oils and sweat can cause yellow stains over time. When you sleep, your body makes oils and sweat, which can go into the mattress topper and cause it to turn yellow.

2. Spills are another reason. If you spill food or drinks on your topper, clean it up immediately to prevent yellow stains.

3. Oxidation, or exposure to oxygen over time, can also cause the foam to turn yellow. As we age, it’s natural for things to deteriorate. However, we can limit damage by keeping them away from heat, light, and air when not in use. Store your topper in a cool, dark place when not on the bed.

4. Most yellow spots on your mattress topper come from urine. Urine marks are some of the worst and need to be fixed right away. Blot as much urine as possible with an absorbent cloth or paper towel. Next, sprinkle baking soda on the area. It will help remove any leftover moisture and odors. 

Let it sit before vacuuming, and then rinse or steam clean the area. You may need to repeat this a few times to remove the stain and smell fully.

Find out why your foam mattress topper has yellow spots immediately and fix the problem. You take good care of your topper so it stays clean and lasts a long time.

How To Remove Yellow Stains From Your Mattress

A common problem is getting rid of yellow spots on your mattress. You can remove yellow stains from your mattress topper effectively. If you are, take the proper steps to remove the yellow color.

The most common causes of yellow stains are sweat, body oils, urine, and vomit. Identify the source of the color to determine the best way to lift it. We discuss the two best ways to remove yellow spots.

Why Do Foam Mattress Toppers Turn Yellow

1. How to Prevent Natural Way to Yellow Stains on Mattress Toppers ( Methods 1)

Natural methods are among the best ways to remove yellow spots on your mattress topper. Baking soda, Vinegar, and sunlight are great for cleaning and removing odors.

There are easy and natural ways to prevent and remove these stains without any hassle. Here’s a step-by-step guide to help you keep your mattress topper fresh and clean.

Step 1: Remove all bedding

First, remove all the bedding from your mattress topper, such as sheets, covers, and pillows. It gives you a clear view of the stains you’re dealing with.

Step 2: Identify the Stain

Now, it’s time to play detective. Identify the yellow stains on your mattress topper. Knowing where the colors are will help you target them more.

Step 3: Use white Vinegar

White Vinegar is a natural deodorizer and disinfectant. Mix it with an equal part of water in a spray bottle and spray this solution on the stained areas. Let it sit for a few minutes to work its magic. Vinegar removes odors and prevents new stains from forming in foam toppers. For tough odors, you may need to spray the entire topper.

Step 4: Apply baking soda, salt, and water

Make a solid paste to remove stains by combining baking soda, salt, and a little water. This paste will be your trusty sidekick in the fight against yellow colors.

Step 5: Mix baking soda, salt, and water

Apply the baking soda and salt paste to the stained areas on your mattress topper. Let it sit there for about 15 minutes. It gives it time to work its way into the stains.

Step 6: Brush the stained area

Now, it’s time to roll up your sleeves and get brushing. Use a soft brush or a toothbrush to scrub the paste into the stain. Be careful not to be too rough and damage the foam.

Step 7: Rinse.

After you’ve given the stained areas a good scrubbing, rinse them with clean water. You can use a damp cloth or a spray bottle for this step. It’s time to wash away the evidence.

Step 8: Repeat if Necessary

For stubborn stains, you should go through the above steps more than once. Don’t lose heart; persistence pays off.

Step 9: Sunlight Exposure

One of the simplest and most effective natural ways to remove stains and odors is by harnessing the power of sunlight. On a warm, sunny day, take your mattress topper outside and spread it out over a large area, like your lawn. 

Every 30 minutes, flip the topper over to expose both sides to the UV rays of the sun. Sunlight is a natural brightener and deodorizer. After 3 to 4 hours in the sun, wash your mattress topper before putting it back on your bed. The sun will fade yellowing and freshen your topper.

Step 10: Dry

Before you put new sheets on, make sure your mattress topper is completely dry. You don’t want to trap any moisture, as that can lead to more stains in the future.

So, there is a simple, natural, and effective way to prevent yellow stains on your mattress topper. Say goodbye to those spots and hello to a fresh and clean place to rest your head.

2. How to Clean Urine Out of a Mattress Topper ( Methods 2)

Don’t worry if someone peed on your mattress topper! You can easily remove stains and clean urine out of your mattress topper. You need to follow the simple six-step process.

How to Clean Urine Out of a Mattress Topper
How to Clean Urine Out of a Mattress Topper`

Step 1: Remove all bedding

First, strip your bed of all sheets, blankets, mattress pads, and of course, your mattress topper. The fewer layers between you and the stain, the better.

Step 2: Sprinkle baking soda

Baking soda is excellent at absorbing odors and liquids. Sprinkle it over the entire stain, covering the edges. Let it sit for at least 30 minutes to soak up as much urine as possible.

Step 3: Spray the stain

Mix one part white vinegar and one part water in a spray bottle. Spray the solution over the baking soda and stain until saturated. The vinegar helps neutralize the odor and lift the stain from the material.

Step 4: Brush and blot

Use an old toothbrush to loosen the stain. Then, blot with a clean, damp cloth or sponge to absorb the excess moisture. Do not rub the stain, as this can spread it and push it deeper into the material.

Step 5: Vacuum and repeat

Vacuum up the baking soda from your mattress topper. If the stain is still noticeable, repeat the steps above until it’s removed. For tough stains, you should scrub a bit more.

Step 6: Air dry

After you remove the stain, let your mattress topper air-dry somewhere that isn’t too hot or sunny. It helps the material keep its shape as it dries. 

Your mattress topper will be fresh and clean, and the pee stain will be a distant memory! With regular laundering and stain prevention, your mattress topper can stay urine-free.


In conclusion, We discussed why it’s essential to know why foam mattress toppers turn yellow. We also discussed how to fix this problem. These mattress toppers are soft, but pee, sweat, food, or rust can stain them.

We discussed a few helpful things you can do to keep your mattress topper clean and stain-free. First, we looked into what causes these yellow stains. We found out the things that might be affecting your sleep quality.

After that, we explored the solution and a detailed guide on how to get rid of yellow stains on your mattress topper. 

So follow practical steps: remove bedding, use white vinegar, baking soda, and sunlight. It’s a step-by-step journey to help you restore the freshness of your mattress topper.