Lavender essential oil used in soap will gently cleanse the skin without stripping it of moisture, allowing its anti-inflammatory and antibacterial properties to combat pimples and skin irritation. These properties also make lavender soap useful in treating skin infections, scabies, and eczema.
An excellent guideline for blending essential oils during soapmaking is approximately 30% top notes, 50% middle notes, and 20% base notes. Top notes are the first fragrances in a blend that are identified by your nose. Lighter, brighter scents like lemon and tea tree are top notes.
If too much essential oil is used in a product, it can cause skin irritation. The easiest way to find out how much essential oil is to use the Fragrance Calculator. Simply select what kind of product you're making, how much you're making and which essential oil you want to use.
Just like fragrance oils, it's important to use them properly. Each essential oil has a different usage rate, and depending on what you're making you'll need to use a different amount. If too much essential oil is used in a product, it can cause skin irritation.
Blending essential oils by fragrance
Lavender Essential Oil
Using essential oils on the skin without diluting them is referred to as applying them "neat." Never Put Undiluted Essential Oils On Your Skin. Not even lavender or tea tree. Always dilute essential oils adequately prior to applying them to your skin, scalp or hair.