You will not be able to find natural candle colorants off the shelf. In fact, naturally coloring soaps is not common, but that doesn’t mean it can’t be done. Many herbs, flowers and other botanicals will clog your wick when added to candles for color. It’s all about method when it comes to coloring candles from botanicals. A simple oil infusion will do the trick.
Just like making an herbal oil infusion for soap and bath oils, you can use this method to color your candles without clogging the wick. Instead of oil, you’ll use soy wax or other natural wax. Place some wax in a double boiler and melt. Place an equal amount of herbs in a heat sealable tea bag or a coffee filter tied off with some string. Toss the herbal bag into the pot of wax and allow to steep while over a very low heat until the color of the herb tints the wax. This may take hours. You can also try placing the herbs and wax in a bowl and setting it in a water bath in a crock pot where the temperature can be kept low and you won’t need to continually replenish the water. You can then add this colored wax to your candle mixture to provide a natural tint. You’ll need to experiment with different herbs to get the desired colors.
Here are some botanicals that may be used to color candles using the infusion method.
Alkanet Root – Purple to red color
Annatto Seeds – Yellow color
Kelp – Natural green color
Lemon Peel – Yellow to orange color
Madder Root – Peach color
Orange Peel – Natural orange color
Paprika – Deep, rich orange color
Parsley – Natural green color
Rosehips – Burgundy red color
Rosemary – Natural green color
Spirulina – Warm green color
Turmeric – Bright yellow color
Note: You will need to conduct a burn test to be sure your wicks do not clog and that smoke and unpleasant fumes are not let off. Also, be sure your candle is burning evenly.