What is Calendula?
Chemically, Calendula (INCI name: Calendula Officinalis Extract) is a botanical extract. A soothing marigold extract rated 1/5.
You may see it on labels as Calendula, Calendula Officinalis Extract, so it can hide under more than one name in an ingredient list.
Where Calendula shows up
Calendula is commonly formulated into soothing toners, moisturisers, and 'natural' formulations. Separately from clogging, its irritancy is rated 0/5 — low, so it's unlikely to sting or sensitise on its own.
Is Calendula bad for acne-prone skin?
Because it barely registers on the comedogenic scale, Calendula is generally a safe pick for breakout-prone skin and is often recommended as a gentler alternative to heavier ingredients.