Pure paraffin wax block is not completely transparent, it will crystallize excessively when cooled, resulting cotton wool pattern in pure paraffin candle .

After the essential oil is mixed, since the essential oil itself contains maltol, etc., and contains fragrance components and color components, the overall color is a high-hardness wax block with translucent essential oil dyed with color.
Slight black smoke is produced when burning.
To make candles more beautiful, cleaner and tidy, burning without black smoke.

The color of the candle made by mixing pure paraffin wax with essential oils, as shown below:

Usually there are trace additives inside the candle .

For example :

A scented candle made of paraffin wax will add a small amount of microcrystalline wax: it will make the candle softer and help to remove the cotton wool produced during the cooling process of the paraffin, so that the paraffin does not crystallize excessively.
Add a small amount of ghee wax (extracted from animal milk): It helps the wax liquid and the essential oil to merge during the production process, making the wax block easy to shape, helping the wax block to break away from the glass wall, and the appearance becomes better. But the color is yellowish.
Stearic acid (vegetable or animal oil extract) ：  is added to help increase the hardness and whiteness of the candle, mask the color of the essential oil, relieve the black smoke of pure paraffin burning, and make the candle harder.
Oily pigment : Dye candles.

However, all additives cannot be used at the same time.

For example :

The simultaneous use of stearic acid and ghee wax will cause a chemical reaction, which will make the surface of the candles pitted.

Stearic acid works opposite to microcrystalline wax, and the simultaneous addition means that the hardness of the candle is not changed.

Excessive stearic acid will quickly decolorize the wax block.

Therefore, candles of different designs use different types and contents of additives.
On the premise of ensuring the appearance of the candle is clean, the burning test is the most test method to test the formula of the candle factory.

Qingdao Yuan Bridge Houseware Co., Ltd