Coal Tar
Flagged by IARC Group 1 ↗ as a carcinogen concern
What it is
A coal-processing byproduct used in dandruff shampoos and psoriasis treatments. Classified as a Group 1 carcinogen by IARC.
Found in 3 products on this site
Sorted worst score first. Lower score = more concerning overall formulation.
Products that avoid this ingredient
Looking for cleaner options? Browse our best-rated products by category.