What are the Grainy Lines Inside My Candle Jar? How Do I Fix It?

Have you ever lit a candle, hoping to fill your space with a delightful aroma and a warm, soothing glow, only to find that the ambiance is disrupted by strange grainy lines inside the candle jar? Don’t worry; you’re not alone in encountering this puzzling phenomenon. In this article, we’ll explore the reasons behind these grainy lines and offer practical solutions to fix the issue and enjoy your candles to the fullest.

Understanding the Culprit: Frosting

The culprit behind those grainy lines is often a phenomenon called “frosting.” Frosting is a natural occurrence in soy wax candles and some other types of candles as well. It appears as a white crystalline pattern on the surface of the wax, resembling frost on a winter windowpane. This phenomenon occurs due to the natural composition of the wax and its response to temperature changes.

Why Does Frosting Occur?

Frosting occurs when the temperature of the candle’s environment fluctuates. Soy wax, in particular, has a tendency to crystallize when exposed to cooler temperatures. These crystals form on the surface of the wax, creating the grainy appearance you notice inside the candle jar. While frosting doesn’t affect the performance of the candle or its fragrance, it can understandably be a bit perplexing to candle enthusiasts.

Embracing the Natural Beauty

It’s important to note that frosting is not a flaw; rather, it’s a sign of the candle’s natural composition. Many candle enthusiasts actually appreciate the unique and rustic look that frosting adds to their candles. It gives each candle a touch of individuality, reminding us of the organic nature of the materials used.

Minimizing Frosting

If the grainy lines bother you and you wish to minimize frosting, there are a few steps you can take:

  1. Avoid Extreme Temperature Changes: Keep your candles away from drafts, air conditioning, and heating vents. Sudden changes in temperature can exacerbate frosting.
  2. Slow and Even Burning: During the first burn, allow the candle to create a full melt pool (liquid wax reaching the edges of the jar). This helps to prevent “tunneling” and can reduce frosting.
  3. Trim the Wick: A long wick can lead to uneven burning and increased frosting. Trim the wick to about a quarter of an inch before each burn.
  4. Storage: If you’re storing candles, do so in a cool, dry place away from direct sunlight. This can help maintain the wax’s consistency.

The Charm of Imperfection

In a world that often strives for perfection, embracing the charming imperfections of frosting can be a refreshing perspective. Each candle becomes a piece of art, capturing the essence of craftsmanship and the authenticity of natural materials.


Next time you light a candle and notice those grainy lines inside the jar, you can rest assured that you’re witnessing a natural occurrence known as frosting. Rather than being a flaw, these lines add character to your candles. By following a few simple steps, you can minimize frosting, but remember, there’s a certain beauty in embracing the uniqueness that frosting brings to each candle.

FAQs About Candle Frosting

  1. Is frosting harmful? No, frosting is a natural occurrence and doesn’t affect the performance or safety of the candle.
  2. Can I still use candles with heavy frosting? Absolutely! Frosting won’t impact the candle’s ability to provide fragrance or a lovely glow.
  3. Does all-natural wax frost more than paraffin wax? Yes, soy wax and other natural waxes are more prone to frosting than paraffin wax.
  4. Can I remove frosting from my candles? It’s not recommended to remove frosting, as it’s part of the candle’s natural behavior.
  5. Do colored candles show frosting differently? Yes, frosting might be more visible on colored candles, but it’s still a natural occurrence.

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Sharron Gimik
Sharron Gimik

Sharron is the founder and creator of Homestead Sparkle, Down Home Wicks, Bundt Cake Admiration, and Timbers Cove. She loves crafts of all kinds and started as a candle maker. She loves to bake and collect decorative cake pans too.

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