{"id":395785,"date":"2026-10-30T10:11:37","date_gmt":"2026-10-30T09:11:37","guid":{"rendered":"https:\/\/www.youwish.nl\/geen-onderdeel-van-een-categorie\/how-do-you-remove-air-bubbles-from-candle-wax\/"},"modified":"2026-10-30T10:11:37","modified_gmt":"2026-10-30T09:11:37","slug":"how-do-you-remove-air-bubbles-from-candle-wax","status":"publish","type":"post","link":"https:\/\/www.youwish.nl\/en\/candle-making\/how-do-you-remove-air-bubbles-from-candle-wax\/","title":{"rendered":"How to Remove Air Bubbles from Candle Wax: Causes and Solutions"},"content":{"rendered":"\n

You are melting your soy wax when you suddenly hear a crackling sound, almost like something sizzling in a frying pan. Or perhaps your candle has cooled, only to reveal tiny pinholes across the surface, air bubbles trapped against the glass, or a deep sinkhole near the wick. While these issues present differently, they share a single root cause: trapped air. Fortunately, you can prevent nearly all of them with a few simple adjustments to your workflow.<\/p>\n\n\n\n

The quick fix: stir slowly, keep your wax below 90\u00b0C, pour gently at the recommended temperature for your specific wax, tap the container or mold immediately after pouring, and smooth out any lingering surface flaws with a heat gun. Below is a breakdown of what causes each issue and how to resolve it.<\/p>\n\n\n\n

\n\n\n\n\n\n\n\n\n\n
What you see<\/th>\nLikely cause<\/th>\nFirst fix<\/th>\n<\/tr>\n<\/thead>\n
Frothing, bubbling, or crackling during melting<\/td>\nAir already trapped within the wax flakes<\/td>\nStir slowly and heat gently until the crackling stops<\/td>\n<\/tr>\n
Bubbles suspended throughout the set candle<\/td>\nStirring too vigorously or pouring too fast<\/td>\nStir gently, pour slowly, and tap the container after pouring<\/td>\n<\/tr>\n
Silvery patches or air pockets along the glass<\/td>\nCold glassware or cooling too quickly<\/td>\nPreheat the container and allow the candle to cool slowly<\/td>\n<\/tr>\n
Pinholes or sinkholes on the surface<\/td>\nTrapped air and shrinkage during cooling<\/td>\nSmooth with a heat gun or do a second pour<\/td>\n<\/tr>\n
Voids around the wick in a pillar candle<\/td>\nWax shrinkage<\/td>\nPoke relief holes and top off with reserved wax<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n

Where Do These Air Bubbles Come From?<\/h2>\n\n\n\n

With soy wax, air is often introduced long before the flakes reach your workshop. During manufacturing, soybean oil is continuously agitated and whipped, which traps microscopic pockets of air within the material. As the wax flakes melt in your pouring pitcher, that trapped air escapes, leading to light foaming, bubbles rising to the surface, and distinct popping sounds. This is completely normal and no cause for alarm.<\/p>\n\n\n\n

However, the rest of the problem often comes down to technique. Stirring too vigorously\u2014especially when blending in candle dye or fragrance oil\u2014whips fresh air directly into the liquid wax. CandleScience notes in its troubleshooting guides that these incorporated bubbles eventually settle into surface imperfections and internal flaws. Pouring into cold jars or letting candles cool too quickly will only exacerbate the issue.<\/p>\n\n\n\n

Removing Air from Melted Wax<\/h2>\n\n\n\n

To release trapped air, stir slowly using a spoon or silicone spatula until any crackling stops and bubbles cease rising to the surface. Avoid using whisks or electric blenders, which will only whip more air into the mixture.<\/p>\n\n\n\n

Always melt your wax using a double boiler and monitor the heat with a reliable thermometer. For KeraSoy 4130 container wax, YouWish notes that brief temperature spikes up to 90\u00b0C will not damage the wax as long as it cools quickly afterward, though sustained heat can cause yellowing. For recycled or remelted wax, technical datasheets advise staying below 85\u00b0C and avoiding prolonged exposure to heat. Manufacturer DPS similarly specifies 85\u00b0C as the absolute ceiling for EcoSoya Q230 while stirring gently. Simply put, overheating wax to force air bubbles out does more harm than good, risking discoloration and scorching.<\/p>\n\n\n\n

A thermometer with a long probe makes monitoring your temperatures much easier.<\/p>\n\n\n