Quick answer

To clean a candle jar, freeze it for 2–3 hours to shrink the wax, pop it out with a butter knife, then wash the glass with warm soapy water. For stubborn residue, use a baking soda paste or a vinegar soak. Always check the jar for cracks before reusing it for food or décor.

Why clean and reuse candle jars?

Candle jars are often made of sturdy glass that can be repurposed for storing small items, holding makeup brushes, or as a decorative vase. Cleaning them properly removes wax residue and soot, making them safe for new uses. It also keeps glass out of landfills.

What you'll need

Gather these supplies before you start: a freezer-safe bag or container, a butter knife or spoon, dish soap, warm water, a soft sponge or bottle brush, baking soda, white vinegar, and a clean cloth. For soy wax cleanup, warm water and soap work well; for paraffin wax, you may need a bit more effort.

Step-by-step: Clean and reuse candle jars

  1. Freeze the jar: Place the candle jar in the freezer for 2–3 hours. The cold temperature causes the wax to shrink and pull away from the glass. Checkpoint: The wax should look separated from the sides. If not, freeze for another hour.
  2. Remove the wax: Take the jar out and use a butter knife or spoon to gently pry out the wax. It should pop out in one or two pieces. If it resists, don't force it—return to the freezer. Common mistake: Using a sharp knife can scratch the glass or cause injury. Stick to a dull butter knife.
  3. Wash with warm soapy water: Fill the jar with warm water and a few drops of dish soap. Let it sit for 10 minutes, then scrub with a soft sponge or bottle brush. For soy wax cleanup, this step is usually enough. Checkpoint: The water should not feel greasy. If it does, repeat with fresh soapy water.
  4. Tackle stubborn residue: If a waxy film remains, make a paste of baking soda and water. Apply it to the residue and scrub gently with a sponge. For a deeper clean, soak the jar in equal parts white vinegar and warm water for 30 minutes. Common mistake: Using abrasive cleaners or steel wool can scratch the glass. Always use soft materials.
  5. Rinse and dry: Rinse the jar thoroughly with warm water to remove all soap and residue. Dry it with a clean cloth or let it air dry upside down on a drying rack. Checkpoint: Hold the jar up to the light—any cloudiness or spots mean you need to rewash.
  6. Reuse creatively: Now your jar is ready for a new life. Use it to store cotton balls, pens, or spices; as a small vase; or as a homemade candle holder. If you plan to use it for food, make sure it's thoroughly clean and the glass is not cracked. Common mistake: Assuming all candle jars are food-safe. Some decorative glass may not be. When in doubt, use for non-food purposes.

Candle jars you might be cleaning

  • Log Cabin Candle: Log Cabin Candle features top notes of Blue Spruce, Birch Bark, and Flannel; mid notes of Chimney Smoke, Tobacco, and Firewood; base notes of Amber, Tonka Bean, and Winter Birch. This jar's cozy, woody scent may leave a faint aroma; a vinegar rinse helps neutralize lingering odors before reuse.
  • Harry Potter Slytherin™ Candle: Harry Potter SlytherinTM Candle includes top notes of Lake Water, Clove, and Stonewalls; mid notes of Tapestry, Vetiver, and Dark Plum; base notes of Oakmoss, Oud Wood, and Suede. Burn to reveal surprise artwork behind the candle label. Once the candle is burned down, the hidden artwork is revealed; clean the jar carefully to preserve the label if you want to keep it as a collectible.