methyl isobutyl ketone (mibk)
Severity 8/10cosmetic ingredient
Is methyl isobutyl ketone (mibk) safe?
methyl isobutyl ketone (mibk) carries significant published concerns (cancer concern, hormone disruption, irritation).
Documented concerns
Cancer concern
8/10Classified by IARC Group 2B; EU CLP Carc. 2.
Hormone disruption
8/10Classified by California Prop 65 (developmental).
Irritation
8/10Classified by EU CLP Eye Irrit. 2.
Related ingredients
Ingredients with a similar role or shared type of concern — useful for comparing what's on your label.
Checking a specific product? Paste its full ingredient list and we'll analyze everything at once.