About Us & Methodology | Pore Clogging Ingredient Checker

The Pore Clogging Ingredient Checker is an independent dermatological resource dedicated to helping consumers identify acne triggers in skincare, haircare, and cosmetic formulations.

The 0–5 Comedogenicity Scale

We evaluate cosmetic formulas using the clinical scale established by Dr. Albert Kligman and Dr. James Fulton, rating ingredients from 0 (will not clog) to 5 (severe clogger).

Editorial & Testing Methodology

Ratings are synthesized from published rabbit ear assays, human repeat insult patch tests (HRIPT), and the Cosmetics Info / CIR ingredient safety archives.