ITEC Pre-blend Aromatherapy Practice Exam

The typical ratio of essential oils to carrier oils in most pre-blended oils is commonly around 2.5% essential oils to 97.5% carrier oil. This ratio is considered safe and effective for topical application, striking a balance between potency and skin sensitivity.

Using a lower concentration of essential oils, as in this option, helps minimize the risk of skin irritation or sensitization while still providing the therapeutic benefits of the essential oils when used in aromatherapy practice. This safety aspect is particularly important for individuals with sensitive skin or for those who may be new to using essential oils, allowing them to experience the benefits without overwhelming their skin's natural barrier.

In contrast, higher concentrations like 5%, 10%, or even 1% could either be too intense for regular use or not provide sufficient therapeutic properties, making them less suitable for general pre-blended applications. The 2.5% concentration ensures that the blend remains effective and safe for a wide audience.