What a 3/5 rating means
On the comedogenic scale, a 3 is the moderate midpoint: tolerated by many, a possible trigger for congestion-prone skin. That puts Sulfated Castor Oil squarely in the judgement-call zone, where your skin type and the product's formula decide the outcome.
One thing the number cannot tell you is concentration. Ingredients are listed in descending order, so Sulfated Castor Oil near the end of a label is present in tiny amounts and matters far less than the same ingredient near the top.
About Sulfated Castor Oil
It is a plant- or seed-derived oil, valued for the emollient, conditioning feel it gives a formula. Also known as Turkey Red Oil. The sulfated modification raises its comedogenicity to 3/5.
On a label it can read as Sulfated Castor Oil, Sulphated Castor Oil, Turkey Red Oil — worth knowing when you scan an ingredient deck.
Sulfated Castor Oil in makeup and skincare
In makeup it turns up in cream blushes, tinted balms, and hydrating foundations; in skincare, in face oils and cleansing balms. Its irritancy is rated separately at 2/5, which is low.
If you deal with fungal acne (malassezia folliculitis) rather than ordinary clogged pores, note that Sulfated 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.
Lower-rated alternatives to Sulfated Castor Oil
If you want a similar role with a friendlier comedogenic score, consider:
- Squalane — comedogenic rating 1/5 (Low risk).
- Hemp Seed Oil — comedogenic rating 0/5 (Low risk).
- Sunflower Oil — comedogenic rating 0/5 (Low risk).