• Sensitization to an essential oil can happen through overuse of any oil and an interesting fact is that Lavender (Lavendula angustifolium), the essential oil with the reputation of being one of the most versatile and safest essential oils around, is the one that most therapists have become sensitized to.

• This happens mainly through overuse of the oil, a good reminder that we should not just use the same oil or blend of oil day in and day out but we should change our blends around on a regular basis.

Source: https://westcoastaromatherapy.com/articles/skin-sensitization/