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It is often difficult to ascertain if a skin care product t contains comedogenic ingredeints, because what blocks pores in one individual may be perfectly fine in another. And that's because skin differs so much amongst individuals.  

Still, you will find many sites on the internet providing a listing of ingredients that may be problematic in clogging pores. Comedogenicity is rated on a scale of 0 to 5. The lower the number, the less likely it is that it will clog pores. Just because an ingredient is an oil or wax, does not necessarily mean that it is comedogenic; some oils and waxes are very well tolerated. A product’s or ingredient’s comedogenicity is tested by applying it to the face of volunteers and evaluating the treated area with a high powered microscope.  Keep in mind that the following list is by no means exhaustive, but may help to shed some clarity on ingredients that can be problematic.  

If you have sensitive skin, you may need to avoid more ingredients. If your skin tolerates most skin care products well, then many of these ingredients will not be problematic. Something that you may find interesting is that sodium lauryl sulfate, an ingredient often used in cleansers is problematic, but mineral oil is not.

Acetylated LanolinHigh
Acetylated Lanolin AlcoholHigh
Algae ExtractHigh
Bismuth oxychloride High
Butyl StearateHigh
Cetearyl Alcohol + Ceteareth 20High
Coal tarHigh
Cocoa ButterHigh
Coconut ButterHigh
Coconut OilHigh
Colloidal SulfurHigh
Corn OilHigh
Cotton Aws OilHigh
Cotton Seed OilHigh
D & C Red # 17High
D & C Red # 21High
D & C Red # 3High
D & C Red # 30High
D & C Red # 36High
Decyl OleateHigh
Dioctyl SuccinateHigh
Disodium Monooleamido PEG 2-SulfosuccinateHigh
Ethoxylated LanolinHigh
Ethylhexyl PalmitateHigh
Glyceryl Stearate SE -MUST have SE after the stearate High
Glyceryl-3-Disostearate-(MUST have a "3" with it)High
Hexadecyl AlcoholHigh
Hydrogenated Vegetable OilHigh
Isocetyl StearateHigh
Isodecyl OleateHigh
isoproply linoleateHigh
Isopropyl IsosterateHigh
Isopropyl lanolateHigh
Isopropyl MyristateHigh
Isopropyl PalmitateHigh
isostearic acidHigh
isostearyl acidHigh
Isostearyl IsostearateHigh
Isostearyl NeopentanoateHigh
lanolic acidHigh
Laureth 23High
Laureth 4High
Lauric AcidHigh
Linseed oilHigh
Mink OilHigh
Myreth 3 myrstateHigh
Myristic AcidHigh
Myristyl LactateHigh
Myristyl MyristateHigh
Octyl PalmitateHigh
Octyl StearateHigh
Oleic AcidHigh
Oleyl AlcoholHigh
PEG 16 LanolinHigh
PEG 200 DilaurateHigh
PEG 8 StearateHigh
PG MonostearateHigh
Polyglyceryl-3-Disostearate (the "3" must be present)High
Potassium ChlorideHigh
PPG 2 Myristyl PropionateHigh
Propylene Glycol MonostearateHigh
Red AlgaeHigh
Salt - Table Salt or Sodium ChlorideHigh
Shark Liver OilHigh
Sodium Laureth SulfateHigh
Sodium Lauryl SulfateHigh
Solulan 16High
Sorbitan OleateHigh
Sorbitan SesquinoleateHigh
Soybean OilHigh
Steareth 10High
Stearic Acid TeaHigh
Stearyl HeptanoateHigh
Sulfated Castor OilHigh
Sulfated Jojoba Oil (NOT Jojoba beads)High
Syearyl HeptanoateHigh
Wheat Germ GlycerideHigh
Wheat Germ OilHigh
Almond OilMedium
Apricot Kernel OilMedium
Arachidic AcidMedium
Ascorbyl PalmitateMedium
Avocado OilMedium
Behenic acidMedium
Benzoic AcidMedium
Butylated Hydroxyanisole (BHA)Medium
Cajeput OilMedium
Capric AcidMedium
Caprylic acidMedium
Cetearyl AlcoholMedium
Cetyl AlcoholMedium
D & C Red # 19Medium
D & C Red #27Medium
D & C Red #40Medium
Evening Primrose OilMedium
Grape Seed Oil (extract is OK)Medium
Hexylene GlycolMedium
Olive Oil (Olive Oil Extract is OK)Medium
Palmitic AcidMedium
Peach Kernel OilMedium
Peanut OilMedium
PEG 100 DistearateMedium
PEG 150 DistearateMedium
Peg 75 lanolinMedium
Pentarythrital Tetra IsostearateMedium
PG DipelargonateMedium
PG DipelargonateMedium
Sandalwood Seed OilMedium
Sesame OilMedium
Steareth 2Medium
Steareth 20Medium
Stearic AcidMedium
Stearyl AlcoholMedium
Tocopherol (Tocopherol Acetate is OK)Medium
Vitamin A Palmitate-(ONLY this form of Vitamin A)Medium
Avocado OilLow
Castor OilLow
Corn OilLow
D & C Red Number 4, 6, 7 or 8Low
Glyceryl StearateLow
Lanolin AlcoholLow
Lauryl AlcoholLow
Mineral OilLow
Safflower OilLow
Sunflower OilLow

Sharmani Pillay is a Registered Pharmacist who specializes in anti aging skin care and women's wellness. She owns and operates an online skin care store at [Link Removed].

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