What a 2/5 rating means
On the comedogenic scale, a 2 is still within the non-comedogenic range that dermatologists generally consider low-risk. That places Capric Acid in the range most people, including many with acne-prone skin, tolerate well.
One thing the number cannot tell you is concentration. Ingredients are listed in descending order, so Capric Acid near the end of a label is present in tiny amounts and matters far less than the same ingredient near the top.
About Capric Acid
It is a fatty acid, one of the building blocks of oils and a common texture and cleansing agent. A C10 fatty acid rated 2/5. Its short chain falls below the C11 threshold, so it is generally considered fungal-acne safe.
On a label it can read as Capric Acid, Decanoic Acid — worth knowing when you scan an ingredient deck.
Capric Acid in makeup and skincare
It shows up in cleansing balms, cream cleansers, and the base of many creams and pressed powders. Its irritancy is rated separately at 2/5, which is low.