4. It can promote skin allergies and itchiness
While it is true that essential oils have aromatherapy benefits – like Peppermint oil can alleviate headache – it can also cause skin redness, itching and allergies. If you want to use essential oils, it has to be diluted first with carrier oil. You cannot use it as a without the base oil.
If you want to know which essential oils will cause allergies on you, do a skin test. You have to dilute the essential oil with base oil and apply it on your inner arm.
But, these essential oils are not to touch your skin, even for a skin test:
Cinnamon leaf oil