Essential Oil Blending Flashcards

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

Answer: Sandalwood

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

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

Answer: 3:2:1

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

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

Answer: Antagonism

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

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

Answer: Bridging

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

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

Answer: 12 drops

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

Which essential oil is commonly used as a 'modifier' to soften and round out harsh blends?

Answer: Lavender

Lavender acts as a modifier and blends well with almost any oil, softening sharp or harsh notes.