If you haven't already watched my Comedogenic Oils video, I highly recommend that you check it out below. It talks about what "comedogenic" means, and gives ratings for all of the most common emollient oils and some other types of ingredients. I'm going to post those ratings here for easy access in case you are in a store looking at an ingredient list and need to double check an ingredient's rating. Ingredients with varying ratings will be indicated with +/-, meaning that they may appear higher or lower depending on the source.
Comedogenicity ratings can vary dramatically from source to source. These ratings are a compilation of the best sources I could find, namely Mark Lees, the science author for Milady esthetics textbooks, and my personal experiences with the individual oils on myself and with clients.
Remember that some of these ingredients have different ratings on different scales (indicated by +/- ).
Highly Comedogenic (4/5-5/5):
Sodium Laurel/Laureth Sulfate
Soybean Oil +/-
Peach Kernel Oil
PEG 16, 8, 200
Wheat Germ Oil
D&C Reds #30, #36, #40, #17, #21, #3
Moderately Comedogenic (~3/5):
Corn Starch +/-
Coconut Oil +
Grape Seed Oil +/-
Tocopherol (Vitamin E, Apricot Kernel Oil)
Cotton Seed Oil
Almond oil -
Mildly Comedogenic (1/5-2/5):
Corn Oil +
Mineral Oil (aka Pariffinum Liquidum) -/-
Shea Butter +/-
Argan Oil +/-
Rosehip Oil +- (this is a guess based on its lipid profile, which is similar to argan oil)
Hemp Oil +/-
Dimethicone, Cyclomethicone, etc.
Petrolatum (Petroleum Jelly, Vaseline)
Jojoba Oil +