Ingredients rated 4/5
29 ingredients carry a published comedogenic rating of 4 — high on the 0–5 scale. Grouped by ingredient family; each entry shows its source and confidence tier.
Esters (9)
- 4/5Cetyl AcetateOften paired with acetylated lanolin alcohol.
- 4/5Ethylhexyl PalmitateWidely used ester; caution rating.
- 4/5Isopropyl LinoleateEster, strongly comedogenic in the original testing.
- 4/5Isopropyl PalmitateCommon ester, strongly comedogenic.
- 4/5Isostearyl IsostearateEster, strongly comedogenic.
- 4/5Myristyl LactateEster, strongly comedogenic.
- 4/5PPG-2 Myristyl PropionateEster, strongly comedogenic.
- 4/5Propylene Glycol MonostearateCited 0–3 in the original Fulton testing and up to 4 in later compilations; higher-caution value kept.
- 4/5Stearyl HeptanoateEster, strongly comedogenic.
Plant and animal oils (5)
Lanolin and derivatives (4)
Plant butters (4)
Surfactants and emulsifiers (3)
Fatty alcohols (2)
Thickeners and film formers (1)
Fatty acids (1)
About these ratings
Every number is a published rabbit-ear assay grade (Fulton 1989 lineage), shown with its source and a confidence tier on the ingredient page. A rating describes a raw ingredient as tested, not a finished product: concentration, formulation and individual skin decide real-world behaviour. 3/5 and up is where the 1989 AAD symposium recommended caution. How we rate · full sortable table and CC-BY download.