Skinredientspore-clogging ingredient checker

Pore-clogging ingredient checker

Paste a product's ingredient list to see which ingredients have a published comedogenic (pore-clogging) rating, how high it is, how far up the list they sit, and which study the rating comes from.

Copy it from the product page or the back of the pack. Commas, new lines, bullets and "Ingredients:" headings are all fine.

or press Ctrl+Enter

Checked inside your browser. The list is never uploaded or sent to analytics.

Try an example:

How the checker works

  1. It reads your list the way a label is printed: in order, with commas, brackets, "may contain" sections and alternative names such as Aqua/Water/Eau.
  2. It matches each name against 230 ingredients whose comedogenicity has been graded in published studies (112 of them graded 2 or higher).
  3. It flags anything graded 2 or higher, shows where it sits in your list, and cites the study and test conditions for each grade.

Reading the result

  • Highlighted ingredients were graded 4–5, a clear positive in the original test.
  • Underlined ingredients were graded 2–3, which the original researchers called borderline.
  • Ingredients graded 0–1 are listed but not flagged: they did not cause a significant reaction in the test.
  • "No published rating" means nobody has published a test we could find. It is not a pass.
  • Position matters. Ingredients above about 1% are listed from most to least, so a flagged ingredient in the first five usually matters more than one near the end.

Comedogenic ratings are old, mostly from rabbit-ear tests that overreact compared with human skin, and they describe single raw materials rather than finished products. They are a useful screen for people whose skin clogs easily, not a diagnosis. How the 0–5 scale was made, and its limits.

Ingredients people ask about

Detailed, sourced pages on frequently searched ingredients:

Or browse every rated ingredient in one table.

Questions

How do I check if a product is pore-clogging?

Copy the full ingredient list from the product page or packaging, paste it into the box above and press Check ingredients. Each ingredient with a published comedogenic rating is shown with its grade, its position in the list and the study the grade comes from.

Does a flagged ingredient mean the product will break me out?

No. Most grades come from tests of single raw materials on rabbit ears or human backs, often at higher strength than in a product. A finished formula with a flagged ingredient may be fine for you. Treat a flag as a reason to look closer, especially if the ingredient is near the top of the list and your skin clogs easily.

Why do some ingredients say "no published rating"?

Because no comedogenicity test for them was found in the studies we use. Most cosmetic ingredients have never been tested this way. No rating is not the same as safe, so the checker does not count them as passing.

Is this the same as a non-comedogenic checker?

Yes in practice: if nothing in the list is flagged, none of its tested ingredients scored 2 or higher. But a product is only truly non-comedogenic if the finished formula was tested, which is what a "non-comedogenic" claim on the label is supposed to mean.

Do you store the ingredient lists I paste?

No. The checker runs in your browser and the list is never sent to us or to analytics. A shared result link keeps the list inside the link itself.

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