How to Make a Candle With Essential Oils
To make a candle with essential oils, start by melting some wax in the microwave or on the stove. Secure your wick by pouring a drop of the melted wax into a glass or metal container and quickly pressing the tabbed wick into it. Pull the end of the wick up to the top of the container and wrap it around a pen or pencil so it stays upright. When the wick is ready to go, let your wax cool slightly, then mix in your essential oils. To finish, simply pour the wax into the container and let it harden around the wick for several hours.
Cover your work surface with newspaper. Wax splatters are difficult to clean, and even if you manage to scrape them off, there may still be some residue. Make cleaning easier later on by covering your counter with some newspaper. You can also use other protective coverings, such as plastic bags, paper bags, or plastic tablecloths. Choose a glass or metal container for your candle. Tin cans, old tea tins, and mason jars are all great choices here. Make sure that whatever container you choose can withstand heat. Even though the flame won't be directly touching the material, it will still get hot. Wash the container with warm, soapy water, even if it looks clean. Old candle jars are another great option. Be sure to remove all of the old wax first, however. If you are using a mason jar, choose one that has a wide mouth; it will be easier to work with than the kind with the standard, narrow mouth. Measure your wax flakes with your container, then double it. Place a bowl on a kitchen scale, then use your chosen container to measure out 2 portions of wax flakes. Wax will shrink as it melts, so you will need to use twice the amount that your container holds. Cans and jars come in all shapes and sizes, so there is no set weight that you should use. Soy wax flakes are the most popular and easiest to work with, but you can use others too, such as beeswax. Weigh your wax using a kitchen scale. This will help you figure out how much essential oil to use. Keep in mind that different types of waxes may require different ratios of wax to essential oil, so double-check the instructions that came with your wax. Melt the wax and heat it to about 180 °F (82 °C). Use a candle-making or candy-making thermometer to gauge the temperature. Double-check the instructions that came with your wax to find out exactly what temperature it should be heated to, as different kinds of wax have different melting points. Microwave: put the wax into a glass measuring cup, then heat it at 30-second intervals, stirring between each interval, until melts. Stove: Fill a pot with a 2 inches (5.1 cm) of water, then set a metal pitcher into it. Add the wax to the pitcher, and bring the water to a boil. Stir the wax often as it melts. Add color to the wax, if desired. There are 2 ways that you can do this. The professional way would be to add some pieces of candle-making dye. It comes in little bricks, which you can get at a craft store or online. Continue heating the wax until the dye melts and blends in completely. Alternatively, you can add in some crayon shavings instead. Place a drop of hot wax into the bottom of your container. Take some of the wax you just melted, and place a drop into the bottom of your container. Alternatively, you can use a drop of hot glue or super glue instead. Be prepared to work quickly, as the hot wax or hot glue will set up fast. If you don't have spare candles or a hot glue gun on hand, place a piece of double-sided tape against the bottom of your tabbed wick. Press a tabbed wick into the wax. You can buy tabbed candle wicks in the candle aisle of a craft store and online. They look like long candle wicks with small, metal disks on the bottom. Tuck the wick into the container, then use your finger or a stick to press the tab against the hot wax or hot glue. Don't worry if the wick is too long for the container. You will cut it at the very end. If you cut it now, it won't stick up straight in the wax. Wrap the wick around a stick, then set the stick on top of the container. Take a stick of some sort; it can be a pen, chopstick, pencil, or even a paintbrush. Wrap the end of the wick around your stick until the stick hits the rim of the container. This will help hold the wick upright. If the wick starts to unravel, secure it to the stick with a clothespin or a binder clip. Wrap the wick tightly enough so that it stands up as straight as possible inside the container. Wait about 5 minutes for the wick to set. Hot glue will need about 2 to 3 minutes to harden. If you used super glue or double-sided tape, then you don't need to wait at all. If you don't wait for the wax or hot glue to set, the wick may move as you are pouring the wax. Let the wax cool to about 140 °F (60 °C). Use a candy-making or candle-making thermometer to gauge the temperature as the wax cools. The wax may already have cooled down to this temperature while you prepared the jar. If it didn't, then just wait a few more minutes. This is very important; if you add the oils to the wax too soon, the heat will cause them to burn off resulting in a less-fragrant candle. Stir in your desired essential oils. You can use just 1 type of essential oil, or you can mix-and-match difference oils to create a more unique fragrance. How much you add is up to you, but plan on using about 1/2 ounce (15 mL) of essential oil per 1 pound (454 g) of candle wax flakes. You can use more or less oil. Keep in mind that the scent will weaken a little once the candle hardens. Pour the wax slowly into the container. Don't pour quickly, or you'll get bubbles and wax splatters. Leave about 1 inch (2.5 cm) of the container unfilled. If you fill it all the way to the top, the wax may drip down the sides of the container when you light the candle. Be sure to save the excess wax. You can use it to fill in any dips or wells in the finished candle. Let the candle harden on the counter or in the fridge. As it hardens, the wax will turn from clear to opaque once again. Depending on the type of wax you used, this will be either white, ivory, or yellow. It will take at least 4 hours on the counter, but it may take as long as 6 or 8. It shouldn't take longer than 1 hour in the fridge, however. Reheat the excess wax and use it to fill any wells, if needed. If your candle dried with a well in the middle, melt the leftover wax, then pour it into the well to fill it. Let the wax cool before moving on. Let any leftover wax harden and cool, then discard it into the trash. Never pour hot wax down the drain. Trim the wick down to about 1⁄4 inch (0.64 cm). Unravel the wick first, then cut it with a pair of scissors down to about ⁄ 4 inch (0.64 cm). This will help prevent the flame from becoming too big and creating too much smoke. You will need to trim the wick down each time before you use the candle. 
Cover your work surface with newspaper. Choose a glass or metal container for your candle. Measure your wax flakes with your container, then double it. Weigh your wax using a kitchen scale. Melt the wax and heat it to about 180 °F (82 °C). Add color to the wax, if desired. Place a drop of hot wax into the bottom of your container. Press a tabbed wick into the wax. Wrap the wick around a stick, then set the stick on top of the container. Wait about 5 minutes for the wick to set. Let the wax cool to about 140 °F (60 °C). Stir in your desired essential oils. Pour the wax slowly into the container. Let the candle harden on the counter or in the fridge. Reheat the excess wax and use it to fill any wells, if needed. Trim the wick down to about 1⁄4 inch (0.64 cm). 