Methylisothiazolinone
Methylisothiazolinone
Also known as: methylisothiazolinone
MET
4/10
Concern level
Moderate concern
Methylisothiazolinone is a synthetic preservative used to prevent microbial growth in cosmetic formulations. It is effective at low concentrations but can be irritating to sensitive skin.
Chemical Properties
Molecular Weight
155.58 g/mol pH Range
4.00 - 8.00Typical Concentration
0.01% - 0.10%CAS Number: 2682-20-4
Skin Type Compatibility
dry skin3/10
oily skin4/10
sensitive skin2/10
acne prone4/10
mature skin3/10
normal skin4/10
Risks & Warnings
Can cause allergic reactions and skin irritation, particularly in leave-on products.
Vegan Cruelty-Free
