Methylisothiazolinone
A preservative that keeps water-based products from spoiling, often listed as MI. Sometimes paired with methylchloroisothiazolinone in shampoos and soaps.
THE INGREDIENT SHELF
Label worries: skincare ingredients people look up
These are the names people stop at halfway down a label. Each page sets out what the research and the regulators say, and what it does not.
6 ingredients
Preservatives
Parabens
A family of preservatives used for decades in creams, lotions and shampoos. They appear on labels as methylparaben, propylparaben, butylparaben and others.
Phenoxyethanol
A preservative used in creams, cleansers and serums, often in place of parabens. Also found in shampoos and body washes.
Triclosan
An antibacterial ingredient found in some soaps, toothpastes and deodorants.
Surfactants
Fragrance
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