I’ve always been interested in how belief can effect the medicinal value of a substance. Most everyone is aware of the placibo effect, but there’s also something called the nocibo effect, where an otherwise effective treatment doesn’t work, because the patient doesn’t believe it will.
So, in response to your article, I’d like to say that there is no clear evidence either way.
Peer backed studies have identified that the bottoms of people’s feet are good places to apply oils. Whether or not people believe that could effect the effectiveness of the oil.
So- I’ll still be giving my self a sedative foot massage with lavender and vetiver before bed.