Carrageenan
Chondrus Crispus Extract
4High risk. Frequently implicated in breakouts on acne-prone skin.
Red-algae thickener; appears on pore-clogging lists.
What it does
thickener
How solid is that number
The rating is graded disputed. Sources disagree. This figure circulates on clinic lists without a clear original citation, so treat it as a reason to patch test rather than a settled number.
It describes the raw ingredient in isolation. In a finished product, how much is present and where it sits in the ingredient list matter just as much. Run the whole label through the checker to see it in context.
