About Will It Clog?

Will It Clog? is a free tool that helps acne-prone people figure out whether a product is likely to break them out — before they buy it or keep using it. Paste any ingredient list and we flag pore-clogging (comedogenic) ingredients and fungal-acne triggers, with safer alternatives.

We built it because checking ingredients one at a time is tedious, and "non-comedogenic" on the front of a bottle isn't regulated or reliable. The only way to know is to read the actual ingredient list — so we made that instant.

Free, private, no signup

The checker runs entirely in your browser. Nothing you paste is uploaded or stored. See our methodology for how ratings are assigned.

Educational use only — not medical advice. Some product links are affiliate links.