Aromatherapy Essential Oil Blending 2

Question 1

Which essential oil is classified as a base note in the perfumery note system?

Accepted Answer

Sandalwood

Answer

Sandalwood is a classic base note with a slow evaporation rate and deep, woody, long-lasting aroma.

Question 2

What is the general ratio of top:middle:base notes recommended when building a balanced blend?

Accepted Answer

3:2:1

Answer

A 3:2:1 ratio of top to middle to base notes creates a balanced, harmonious blend with good longevity.

Question 3

Which term describes the unpleasant reaction when certain essential oils cancel out each other's therapeutic properties?

Accepted Answer

Antagonism

Answer

Antagonism occurs when two or more oils have opposing properties that diminish each other's effectiveness.

Question 4

What blending approach involves creating a 'bridge' oil to connect two seemingly incompatible oils?

Accepted Answer

Bridging

Answer

Bridging uses a third oil with properties shared by both incompatible oils to help them blend harmoniously.

Question 5

How many drops of essential oil are needed to make a 2% dilution in 1 oz (30 mL) of carrier oil?

Accepted Answer

12 drops

Answer

A 2% dilution in 30 mL requires 12 drops, calculated as 30 mL × 20 drops/mL × 0.02 = 12 drops.

Aromatherapy Practice Test