How Long Does Slime Last? (Can You Make It Last Longer?)

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Slime is an oldie but goldie that can last from several days to a few months. It has been used to teach students about elasticity, polymerization, and chemical changes for many years. 

Many children have a fun learning time by making their slime from their DIY slime kit. By mixing some food coloring, white glue, slime activator (a Borax solution), and hot water, you can easily make your own slime at home using a basic recipe. 

In the last few years, viral how-to slime videos have taken over social media and people have been watching them for fun and learning. Some of the most popular slime videos even show how to make cloud slime using shaving cream and some other ingredients. 

In fact, slime ASMR videos (such as people making stretchy slime) are the ultimate go-to for satisfaction.

Even though many people got on board with this entertaining craze, some were concerned about the safety of slime or even how long it would last. 

After all, is it really worth buying or making if it only lasts a few days? 

Store bought slime will typically last through multiple months of use before it begins to harden. Homemade slime will only last a week or two before the hardening begins. 

The exact shelf life of slime will vary depending on exactly how you store it. If you store it in an air-tight container and in a refrigerator you can help it last longer no matter whether it is homemade or bought at the store. 

Of course if your slime does start to harden you can easily add products to your old slime to soften it up again (and there are many videos showing how to soften your slime). You can also lengthen the lifespan of your slime by properly sealing it after every use. 

Slime that is exposed to the air will begin to harden much faster than slime that is kept in an airtight container. 

Slime can last from a few days to a few months, depending on the type of slime and whether it is store bought or homemade. Its shelf life is determined by the components used and the way it is stored. 

Mold, yeast, fungi, and air are slime’s biggest enemies, which means it must be stored properly to last longer.

Even though it’s great to make regular slime, it is not a substance that can be left out in the open for long. 

You need to store slime properly (especially DIY slime) if you want it to stay stretchy and fun to play with the next day. In addition to the fact that some slime recipes go bad faster than others, others like Magnetic Slime will start to rust.

How Long Does Slime Last? (Can You Make It Last Longer?)

How to Make Slime Last Longer?

Slime is commonly stored in a plastic bag (such as a Ziplock bag), which are easy to open and close. This will keep your slime fresh for longer. However, these bags have microscopic pores, allowing for tiny amounts of air to enter and escape through their sidewalls.

A great way to extend your slime’s life is by storing it in the refrigerator. Even in an airtight container, keeping it at room temperature won’t keep the slime fresh for very long. 

For some recipes, keeping slime cool can keep it fresh for up to a week, while keeping it in an airtight container can keep it fresh for one month.

Contact with air is the most common cause of slime drying out or becoming moldy. Keeping slime away from the sun and in a vacuum-sealed bag or container is the best way to store it for a long time (more than a month).

Why Does Everyone Love Slime?

Slime is popular for a variety of reasons, including the simple enjoyment of learning science. Watching slime transform into a liquid and then back to a solid is a pleasurable experience for many people.

As a stress reliever, watching slime videos and squeezing it between your fingers is also effective. The sticky texture and the joy you feel when you stretch it are also appealing.

Videos with slime ASMR have an immediate soothing effect for everyone.  After just a few minutes of churning, watching simple materials transform into something altogether different is interesting to everyone, including us! 

Slime also has practical uses such as to clean electronic appliances like laptops, keyboards, car dashboards, and more.

How Many Types of Slime Are There?

Slime comes in a variety of forms and can be made using a variety of methods. 

Currently there are over 20 different types of slime but more are being made and added all of the time. Since many people use slime to experiment it seems like there are constantly new types of slime being made. 

Here are a few of the most popular types of slime. 

Cleaning Slime

This slime is thicker and functions almost like a lint brush when it comes to cleaning your keyboard and other electronic devices.

Unicorn Slime

Rainbow slime or glitter slime is a normal recipe with glitter added to it for extra sparkle.

Fluffy Slime

Slime that resembles a marshmallow when squeezed. Typically, fluffy slime requires more components than other slimes due to its distinct texture. Moreover, it does not include borax.

Glow-In-The-Dark Slime

There is such a thing as glow-in-the-dark slime, and it is easy to make at home with safe, non-toxic materials.

Borax-Free Slime

There are slime recipes without borax for some individuals concerned about the skin-harming effects of borax (a cleaning ingredient).

Add Styrofoam pellets or other beads to slime for a mesmerizing sensory delight. Don’t believe me? Try it yourself!

How to Make Slime

You can buy a slime kit or make slime for yourself at home. If you buy a slime kit, you are good to go as you will be provided with all the necessary ingredients and instructions. 

However, if you decide to make slime at home, no need to worry because you will only need a few very simple ingredients.

To make a basic borax-free slime, you will need simple ingredients such as 4 oz. of white school glue, ¼ tablespoon of contact solution, and ½ tablespoon of baking soda. 

Assemble the components in a bowl and mix for several minutes until it becomes the perfect slimy substance. That means moist, elastic, but not tacky or sticky at all.

This activity is not suitable for children under the age of three years old. Be sure to wash your hands thoroughly before and after handling slime. 

If you unintentionally drink excessive quantities of contact lens solution (more than a tablespoon), seek immediate medical assistance. I’m not sure why you would manage to drink that but it’s important to mention it. 

Some ingredients may cause allergic reactions to people who have sensitive skin or are prone to skin allergies. For example, certain laundry detergents may cause rashes, so it is better to avoid using them. 

As a final precautionary measure, do not ingest or offer slime to a child to eat. It is possible to get sick from ingredients such as saline solution and borax if you use them in your slime. 

What Is Slime?

Slime is a non-Newtonian fluid that is elastic, sticky, and gooey. It is often used in the creation of toys and stress-relieving products. 

Hairspray and water are the most common ingredients in slime. On the other hand, some slime recipes contain toxic additives such as borax, which can cause a variety of health problems.

Slime is a polymer substance made from various household products that can operate as a solid or a liquid, depending on how you handle it. 

An excellent approach to teach youngsters about science ideas is by making slime and playing with it!

Final Thoughts 

All in all, slime is surely one of the most fun objects that are used for multiple purposes, but you need to take good care of it if you want your slime to last longer. 

If you fail to do so, no need to worry; just grab a slime kit or a few DIY ingredients, and you will have a fresh slime to play with in no time. 

Matthew R

Hi, My name is Matt and I am all about toys! When trying to find accurate information online about toys I was finding it difficult so I decided to make this site.

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