Is polymer clay waterproof?

Polymer clay is a versatile and popular crafting material known for its ability to create intricate and durable creations. One common question that arises is whether polymer clay is waterproof. In this article, we’ll explore the waterproof properties of polymer clay and provide insights into how it reacts to water and other liquids.

Water Resistance of Polymer Clay

Polymer clay is water-resistant to a certain extent, which means that it can withstand brief exposure to water without immediately being damaged. When polymer clay is properly cured through baking, it forms a solid and relatively impermeable surface. This surface helps protect the clay from moisture, humidity, and minor splashes.

However, it’s important to note that while polymer clay is water-resistant, it is not entirely waterproof. Prolonged or continuous exposure to water can still affect the clay’s integrity over time. The level of water resistance can also vary depending on factors such as the brand of polymer clay, the thickness of the clay, the curing process, and the presence of additional sealants or finishes.

Effects of Water on Polymer Clay

When polymer clay comes into contact with water, it may experience some changes:

  • Softening: Polymer clay can temporarily soften when exposed to water or heat. This is why it’s important to avoid wearing polymer clay jewelry or items in environments with high humidity, such as saunas or hot tubs.
  • Discoloration: Some types of polymer clay, particularly light or translucent colors, may become slightly translucent or change color when exposed to water. This effect is generally temporary and should revert to normal once the clay is completely dry.
  • Long-Term Impact: Prolonged exposure to water can gradually weaken the structure of polymer clay over time, potentially leading to cracks, brittleness, or other forms of damage.

Protecting Polymer Clay from Water

To enhance the water resistance of polymer clay and protect your creations, consider the following tips:

  • Proper Curing: Ensure that your polymer clay is thoroughly and properly cured through baking. Properly cured clay is less susceptible to water damage.
  • Sealing: Apply a compatible sealant or varnish to the surface of your polymer clay projects. Sealants can provide an additional layer of protection against moisture and help maintain the clay’s integrity.
  • Avoid Prolonged Water Exposure: While polymer clay can withstand occasional contact with water, it’s best to avoid prolonged exposure. Remove polymer clay jewelry before swimming, bathing, or engaging in activities where the clay might be consistently wet.
  • Store Properly: Store your polymer clay creations in a dry and cool environment to minimize the risk of moisture-related damage.


In conclusion, polymer clay is water-resistant to some extent, but it is not entirely waterproof. While it can withstand brief exposure to water and minor splashes without immediate damage, prolonged or continuous water exposure can potentially affect its integrity over time. To protect your polymer clay creations, ensure proper curing, consider applying sealants or finishes, and avoid prolonged water exposure whenever possible. By taking these precautions, you can enjoy the beauty and longevity of your polymer clay projects for years to come.

Rate article
Add a comment