Understanding Frosting in Candles: What It Is and How to Manage It
Frosting is a common occurrence in candle making, particularly when working with soy wax and other natural waxes. While some may view it as a cosmetic flaw, others appreciate it as a unique characteristic of natural wax candles. Here’s a closer look at frosting, why it happens, and tips for managing it.
What is Frosting?
Frosting refers to the whitish, crystalline layer or spots that can appear on the surface of candles made from natural waxes. This happens because of the natural characteristics of soy and other vegetable-based waxes, which contain fatty acids that crystallize over time. It’s more noticeable in colored candles, as the contrast highlights the frosted areas. It is basically the same thing that happens when chocolate turns white.
Also note that it is different from "jump lines" which occur in a straight line and are generally made up of little bubbles or areas of different wax thicknesses that cooled upon contact such as when the container or mold is cooler than the incoming wax.
Why Does Frosting Occur?
The process of frosting is natural and occurs due to the interaction between wax molecules. Here are some contributing factors:
- Temperature Changes: Sudden or extreme temperature shifts can cause the wax to cool unevenly, promoting crystallization.
- Type of Wax: Soy wax and other natural waxes are more prone to frosting because of their organic composition.
- Curing Process: Frosting may develop as the candle cures and continues to harden over time.
Is Frosting a Problem?
Frosting is purely aesthetic and doesn’t affect the candle’s burn quality, scent throw, or safety. In fact, it’s often seen as a testament to the candle’s natural ingredients. However, for those seeking a flawless, smooth finish, it may be considered undesirable.
How to Minimize Frosting
While it’s impossible to completely eliminate frosting in natural wax candles, there are a few steps you can take to reduce its appearance:
- Control the Pouring Temperature: Pouring soy wax at the ideal temperature (usually between 120°F and 140°F) can help prevent crystallization.
- Use Additives: Adding small amounts of paraffin or additives like Vybar can reduce frosting, though this may compromise the natural aspect of the candle.
- Preheat Containers: Warming up your candle jars or molds before pouring wax promotes even cooling.
- Store in a Stable Environment: Avoid exposing finished candles to drastic temperature changes or high humidity.
- Experiment with Techniques: Stirring wax gently, avoiding over-mixing, and allowing slow, even cooling can help reduce frosting.
Embracing Frosting as a Unique Feature
For some candle makers and enthusiasts, frosting is celebrated as a charming and authentic mark of natural wax. It reminds users that the candle is free of synthetic stabilizers or additives, aligning with eco-friendly and sustainable values.
Final Thoughts Frosting is an inherent characteristic of soy and other natural wax candles, offering a reminder of their organic origins. By understanding what causes frosting and how to manage it, you can ensure your candles maintain their beauty while honoring their natural appeal. Whether you choose to embrace frosting or take steps to reduce it, your candles will continue to burn bright and delight the senses.
