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Ingredient

Methylchloroisothiazolinone

A preservative used in a fixed mixture with methylisothiazolinone, permitted in the EU in rinse-off products only.

What it does

  • Preservative

    Keeps the product free of microbial growth in use.

What we tell people

  • Subject to a regulatory restriction

    One or more ingredients in this product are restricted in at least one market. The restriction is usually a concentration limit or a limit on the type of product.

    Why: Points at a named instrument rather than implying a general hazard. The specific provision is shown with the ingredient.

Regulatory position

Tied to a named instrument rather than summarised. Presence in an ingredient glossary is not evidence that a substance is permitted at any concentration or for any purpose.

  • EU · restricted

    Regulation (EC) No 1223/2009, Annex V, entry 39

    Maximum 0.0015 % of a 3:1 mixture with methylisothiazolinone

    Rinse-off products only

Reference

Also written as
MCI, Methylchloroisothiazolinone and Methylisothiazolinone
In our catalogue
11 products

Ingredient reference data © European Union, 1995–2026, reused under CC-BY 4.0. Plain explanations are BeautySignal's own. This is information, not medical advice. How we source this.