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 Ascorbyl Palmitate 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 Ascorbyl Palmitate near the end of a label is present in tiny amounts and matters far less than the same ingredient near the top.
About Ascorbyl Palmitate
It is an active ingredient included for a specific skin benefit. An oil-soluble vitamin C ester rated 2/5. As a palmitate ester it is sometimes avoided for fungal acne.
Ascorbyl Palmitate in makeup and skincare
It is formulated into targeted treatments and some makeup-skincare hybrids. Its irritancy is rated separately at 0/5, which is low.
If you deal with fungal acne (malassezia folliculitis) rather than ordinary clogged pores, note that Ascorbyl Palmitate is among the fatty-acid or ester-type ingredients that community sources commonly avoid — a separate concern from its comedogenic score, and one with weaker evidence behind it.