What a —/5 rating means
Because no dependable rating exists, judge Hydrogenated Castor Oil by how your own skin responds rather than by a number. The absence of a score is not the same as a zero — it simply means the ingredient has not been reliably tested on the classic comedogenic scale.
About Hydrogenated Castor Oil
It is a wax that lends structure and body to sticks, balms, and colour cosmetics. Castor oil with its double bonds saturated, converting the liquid oil into a hard, brittle wax used to structure balms, sticks and mascaras. It is named on the AcneClinicNYC pore-clogging ingredient list, but that list does not publish a 0-5 comedogenic score for it and no Fulton-derived table we cite carries one. We therefore leave it unrated rather than invent a number — treat the listing itself as the signal.
On a label it can read as Hydrogenated Castor Oil, Castor Wax, Hco — worth knowing when you scan an ingredient deck.
Hydrogenated Castor Oil in makeup and skincare
It gives lipsticks, mascaras, brow products, and balms their structure.
If you deal with fungal acne (malassezia folliculitis) rather than ordinary clogged pores, note that Hydrogenated Castor Oil 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.