Methylchloroisothiazolinone Comedogenic Rating

Will Methylchloroisothiazolinone clog your pores? Here is how Methylchloroisothiazolinone performs in acne-prone and combination skin routines.

Methylchloroisothiazolinone Comedogenic Profile

Preservatives are used at minimal concentrations (under 1%) and do not contribute to comedogenicity or pore clogging.

How Methylchloroisothiazolinone Affects Pores

As a preservative, Methylchloroisothiazolinone inhibits the growth of harmful bacteria, yeast, and mold in water-containing formulas. Commonly found in all water-based creams, serums, lotions, cleansers, and masks. Best for essential in all water-based cosmetic formulations.

Tips for Acne-Prone Skin

  • Look for lightweight, non-comedogenic formulations containing Methylchloroisothiazolinone
  • Patch test leave-on formulas for 48 hours before full use
  • Consider the full vehicle and base oils of the formula, not just individual actives
  • Use our free ingredient scanner to check full product lists for comedogenic triggers

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