Keep it in an airtight container
One of the most important things to remember when storing modeling clay is to keep it in an airtight container. This will prevent the clay from drying out and becoming hard, making it difficult or impossible to use. You can use a plastic container with a lid, a ziplock bag, or even wrap the clay in plastic wrap before storing it.
Store it in a cool, dry place
The temperature and humidity of your storage area can also affect the quality of your modeling clay. It’s best to store your clay in a cool, dry place away from direct sunlight. Exposure to heat or moisture can cause the clay to soften or become sticky, making it difficult to work with.
Separate colors
If you have multiple colors of modeling clay, it’s a good idea to store them separately to prevent color mixing. You can use small plastic containers or ziplock bags for each color. Alternatively, you can wrap each color in plastic wrap before storing them together in a larger container.
Label your container
It’s always a good idea to label your container or bag of modeling clay with the type of clay, the brand, and the date you opened it. This will help you keep track of which clay is which and how long you’ve had it. Modeling clay can last a long time if stored properly, but it’s always best to use it sooner rather than later.
Keep it away from pets and small children
Modeling clay can be harmful if ingested, so it’s important to keep it away from pets and small children. Make sure your storage container is secure and out of reach, or store it in a locked cabinet or drawer. If you have young children, make sure to keep an eye on them when they’re working with modeling clay and teach them not to eat it.