Can you waterproof polymer clay?

Polymer clay is a versatile and popular medium used by artists and crafters to create a wide range of projects, from jewelry and sculptures to decorative items. While polymer clay is known for its durability and versatility, it may not be inherently waterproof. However, there are methods you can use to make polymer clay more water-resistant and suitable for certain applications. In this article, we’ll explore different techniques to enhance the water resistance of polymer clay and create long-lasting, water-resistant creations.

1. Sealants and Varnishes

Protective Coatings:

Using sealants and varnishes:

One of the most common ways to waterproof polymer clay is by applying sealants or varnishes. These protective coatings create a barrier that helps prevent water from penetrating the clay. Choose a high-quality sealant or varnish that is compatible with polymer clay and follow the manufacturer’s instructions for application. Be sure to apply multiple thin coats for optimal water resistance.

2. Resin Coating

Resin Application:

Using epoxy resin:

Epoxy resin can be applied to polymer clay creations to create a glossy and water-resistant finish. Mix the resin according to the manufacturer’s instructions and carefully apply it to the surface of the clay. Allow the resin to cure completely to create a strong and durable water-resistant layer.

3. Polymer Clay Sealers

Specialized Clay Sealers:

Using polymer clay-specific sealers:

Some manufacturers offer specialized polymer clay sealers that are designed to enhance water resistance and durability. These sealers can be applied to baked polymer clay and provide an added layer of protection against water and moisture.

4. Avoid Water Exposure

Preventive Measures:

Maintaining water resistance:

While applying sealants and coatings can enhance water resistance, it’s important to take preventive measures to maintain the integrity of your polymer clay creations. Avoid prolonged exposure to water, such as submerging your creations in water or wearing them while swimming or showering. Removing jewelry before engaging in water-related activities can help prolong the water resistance of your pieces.

5. Testing and Experimentation

Exploring Techniques:

Conducting water resistance tests:

It’s advisable to conduct water resistance tests on a small sample piece before applying any sealants or coatings to your main creations. This will help you determine the effectiveness of the technique and ensure that the finish meets your expectations.


While polymer clay may not be inherently waterproof, there are methods and techniques you can use to enhance its water resistance and make it suitable for certain applications. By applying sealants, varnishes, resin coatings, or specialized clay sealers, and by taking preventive measures to avoid water exposure, you can create water-resistant polymer clay creations that withstand the test of time. As you explore different techniques and find the right approach for your projects, you can enjoy the satisfaction of crafting beautiful and durable polymer clay pieces that can be enjoyed for years to come.

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