How to handle with wasted vegetable cooking oils
to make a perfect candle

Recycling vegetable oils is easy, clean and fast

Learn how to treat, easily and economic, wasted vegetable cooking oils or out-of date cosmetic oils:


Filter the wasted cooking oil after being used and before storage, to remove water and food particles, using a coffee filter, a fine-mesh strainer or even a nylon stock. Store the oil in a properly sealed bottle.


Let the wasted oil stand for 24 hours so that the oil and water separate, forming two layers (water on the bottom and oil on top).


If you do not follow these procedures, the candles burn and its scent could be compromised, with fungus possibly speeding up the wax’s decomposition.

Vegetable oils used to make candles

To make environmentally sustainable decorative candles at home, you can utilize the following oils (virgin or used) from cooking or cosmetics:

  • olive oil
  • nut oil
  • grape oil
  • soya oil
  • coconut oil
  • corn oil
  • rice oil
  • castor oil
  • hazelnut oil
  • guava oil
  • linseed oil
  • poppy seed oil
  • sunflower oil
  • sesame oil
  • cottonseed oil
  • óleo de abacate
  • óleo de amendoim
  • óleo de canola (colza)
  • óleo de amêndoas doces
  • óleo de conservas (atum, bacalhau, lulas…)

* If, even so, you still have questions about how to treat your used oils, consult our FAQs section or get in touch with us directly by phone or email.