We read with great interest the article by Gardner et al1 in the August issue of the Archives. In our opinion, the authors fail to distinguish between 2 different preservatives: the mixture in a 3:1 ratio of methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) and the nonhalogenated derivative MI alone, which is, according to the article, contained in Cottonelle moist toilet paper (Kimberly-Clark Corporation, Neenah, Wisconsin).
García-Gavín J, Goossens A. Moist Toilet Paper: Allergy to the Nonhalogenated Derivative Methylisothiazolinone Preservative Alone. Arch Dermatol. 2010;146(10):1186. doi:10.1001/archdermatol.2010.279