Frequency of occurrence and proportion of preservatives recognized on the label of selected merchandise and referring to rinse-off, leave-on and make-up categories. Sixty per cent of the chosen products contained no much less than one of many preservatives investigated, above all amongst rinse-off merchandise (75%). The most incessantly identified preservatives (Tab. IV) have been phenoxyethanol (48.7%), sodium benzoate (35.6%), potassium sorbate (22%), methylparaben (15.2%) and methylisothiazolinone/methylchloroisothiazolinone (MI/MCI) (9.9%). Sodium benzoate was the most common preservative in rinse-off merchandise (57.6%) and phenoxyethanol in leave-on (70.1%) and make-up ones (58.6%).

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