If you want to make a fragrant spray from essential oils to be used as: a body mist, linen spray, room spray, dog pillow spray, insect repellent spray or surface cleaning spray it is imperative that you use an emulsifying agent.
The amount of essential oils used in a spray should typically not exceed 4 to 6%. To do the math consider the size of your bottle: If you are making a spray in a 120 ml bottle for formula would be as follows:
120 ml x 4% (120 x .04) = 4.8 ml
Therefore in a 120 ml bottle you would add 4.8 mls of essential oil.
4.8 ml is approximately near to 5 ml (1 teaspoon) or is approximately equivalent to 100 drops. Essential oils do not breakdown in water, or in witch hazel – so it is imperative that you also use a natural alcohol such as Vodka and it is extremely imperative that you also use an emulsifying agent.
I typically match the volume of vodka and emulsifier to the volume of essential oils. Therefore in a 120 ml bottle I would also add 1 teaspoon of Vodka and 1 teaspoon of emulsifier.
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Note: Aromatherapy, like any other natural therapy, is intended to complement not replace traditional medicine. When in doubt about any medical condition, always seek medical advice. See legal