Are you sure that the recipe is correct Maggie.
Re the 100ml of baby oil, or similair.......the almond or sesame would be ok as they are base oils, but you should NEVER use ANY of the natural oils as a base oil,
with very few exceptions they should NEVER be applied to the skin in their neat form, and must always be diluted.
The cost of 100ml of Lavender oil would also be prohibitive, it is generally sold in 10ml bottles and these generally cost between three and four pounds each.
I would certainly be very dubious of this recipe and would NOT reccomend using it. X