Skincare that makes sense. See what's really in your products — in plain English.

For informational purposes only — not medical advice. Always consult a dermatologist for skin concerns.

Methylisothiazolinone

1% line markerAI-analyzed

INCI: KONSERVIERUNGSSTOFFE (BENZISOTHIAZOLINONE, METHYLISOTHIAZOLINONE). WEITERE INHALTSSTOFFE: HILFSSTOFFE

preservative

What it does

A preservative used in cosmetics to inhibit the growth of bacteria and fungi, often found in rinse-off products.

May aggravate

sensitivityeczemaredness

Safety summary

Has been associated with skin sensitization and allergic contact dermatitis, especially in leave-on products. Its use is restricted in some regions.

1% line marker

This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.

INCI Name: KONSERVIERUNGSSTOFFE (BENZISOTHIAZOLINONE, METHYLISOTHIAZOLINONE). WEITERE INHALTSSTOFFE: HILFSSTOFFE
Common Name: Methylisothiazolinone
Functions: preservative
Products: 1 product

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.

Methylisothiazolinone — Skincare Ingredient Guide — Dermasift — Dermasift