there is a major difference between LAVENDER and LAVENDIN???

Lavender (Lavandula angustifolia) and lavendin (Lavandula x intermedia) are two of the most popular species of lavender. They are both a plant species in the mint family. They are similar in appearance and scent, but there are also some important differences between the two:

lavender is native to the Mediterranean, while you can find lavendin, a hybrid species of lavender, all over the world.
Lavender is also more sensitive to cold weather and can be damaged by frost, while lavendin tolerates cold better.
Lavender is in turn more resistant to disease due to its diversity, where lavendin all have the same dna and are therefore extremely poorly resistant to that same disease.
Lavender has a more delicate flavour, while lavendin has a more robust taste.

Both are used for their essential oils, which are used in aromatherapy. Lavender oil is said to be relaxing and calming, while lavendin oil is said to be stimulating and uplifting.

And so now you know why Young Living works with Lavender and not, like the perfume and soap industry, with lavendin.