Can grapefruit oils cause skin burns?

Yes, grapefruit oils can cause skin burns, particularly when exposed to sunlight after application. This reaction is due to the presence of compounds called furanocoumarins, which can increase photosensitivity. As a result, using grapefruit oil on the skin may lead to irritation, redness, or even chemical burns when exposed to UV light. It's advisable to use caution and perform a patch test before applying grapefruit oil topically.