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Ingredients are listed in descending order by concentration, so where a flagged ingredient falls in the list matters — one appearing near the top is present in a meaningful amount, while one near the bottom is often trace at best. That said, product formulation — concentration, how ingredients interact, and delivery system — plays a bigger role in whether a product clogs pores than any single ingredient's presence on this list. A well-formulated product can include a "flagged" ingredient safely, and a clean-looking list doesn't guarantee a product won't break someone out.