What a 4/5 rating means
On the comedogenic scale, a 4 is in the high-risk band, with a real likelihood of clogging pores on acne-prone skin. That means Isopropyl Lanolate deserves attention if you break out easily, especially when it appears high on an ingredient list.
This rating is disputed. Credible sources land on different numbers for Isopropyl Lanolate, so we publish the range (4) rather than a false single figure. When sources disagree this openly, your own experience carries real weight.
One thing the number cannot tell you is concentration. Ingredients are listed in descending order, so Isopropyl Lanolate near the end of a label is present in tiny amounts and matters far less than the same ingredient near the top.
About Isopropyl Lanolate
It is a lanolin derivative, sourced from sheep's wool and known for deep, occlusive moisture. A lanolin ester frequently named on pore-clogging lists in the high range.
Isopropyl Lanolate in makeup and skincare
It is a classic in lipsticks, tinted balms, and heavy moisturisers. 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 Isopropyl Lanolate 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 Isopropyl Lanolate
If you want a similar role with a friendlier comedogenic score, consider:
- Squalane — comedogenic rating 1/5 (Low risk).
- Petrolatum — comedogenic rating 0/5 (Low risk).