Lemon essential oil
Citrus Limon Peel Oil
Phototoxic. Expressed citrus oils cause burns under UV exposure.
How solid is the pore-clogging number
Lemon essential oil rates 2 of 5 — fine for most, occasionally a problem for very acne-prone skin. The rating is graded established. Traceable to published comedogenicity testing and consistent across sources.
It describes the raw ingredient in isolation. In a finished product, how much is present and where it sits in the list matter just as much. Check a whole label to see it in context.