Aromatherapy Blending Resource Helpful Conversion and Concentration Charts

Often times when I am speaking to people about products that they are making they ask about conversions and how to make blends within certain concentrations. I have posted some conversion charts below for reference. Examples of how to use these charts follow.  Feel free to post your questions regarding blending in the comment section below!

Example #1  ~  Product: Massage Oil
Let's say you wanted to make a massage oil to use on clients, family members, or for personal use. I suggest making a small amount to determine if you like the texture and scent of the blend prior to preparing a larger volume. In classic aromatherapy the recommended dilution for a massage oil is a 2% concentration.
To make 1 oz of massage oil you would need roughly two Tablespoons of a carrier oil/lotion  (e.g. olive oil, sweet almond oil, virgin coconut oil, etc.) and a total of 12 drops of essential oils. Once you have decided on a blend and carrier that you like, you can expand this recipe to a larger volume. For instance, 4 oz of carrier oil(1/2 cup), with a total of 48 drops of essential oils.

Conversion Chart

Drops to Volume

20 drops   =	1/5 teaspoon	=          1ml
100 drops    =	1 teaspoon	=            5 ml
300 drops    =	1 Tablespoon	=          15 ml
600 drops    =	1 ounce	=          30 ml

Blending Concentrations

(per volume)

Bottle Size	Total Volume	Drops per [1%]	Drops per [2%]	Drops per [3%]	Drops per [4%]
1/3 oz=	10 ml	2	4	6	8
½ oz =	15 ml	3	6	9	12
1 oz  =	30 ml	6	12	18	24
2 oz   =	60 ml	12	24	36	48
4 oz   =	120 ml	24	48	72	96
8 oz   =	240 ml	48	96	144	192

 

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