The numbers in Lavender 40/42 indicate the linalyl acetate content; in this case, they indicate the product contains 40%-42% of linalyl acetate. Lavender 40/42 is generally a blend of various lavenders in order to get a consistent scent from batch to batch, with processors adding linalyl acetate to cover the smell of camphor or borneol components of a given lavender.
Most soapers seem to prefer Lavender 40/42 because it smells the way they believe lavender should smell and it's fairly inexpensive......about half the price of other, more expensive lavenders which are usually reserved for aromatherapy purposes. This is our best selling essential oil for toiletries.
Keeps insects away. Blends well with bergamot, chamomile, citronella, lemon, and pine.