Commentary on “Assessment of Health Risk From Historical Use of Cosmetic Talcum Powder”

In response to recent litigation, Colgate Palmolive hired Exponent to determine if various samples of their cosmetic talc products contained asbestos. Anderson et al., Exponent employees, claim to report the findings of these analyses in their paper “Assessment of Health Risk from Historical Use of Cosmetic Talcum Powder.” The microscopist who reviewed the samples found four anthophyllite fibers. One of the authors of Anderson et al., Patrick Sheehan, who is not a microscopist, directed the reviewing microscopist to alter the report and add the qualification that “…this classification was inconclusive due to the small number counted.” Deviations from the referenced analytical methods, however, would account for the small number of fibers counted relative to the limit of detection. Anderson et al., reported that “no asbestos fibers were detected in any of the eighteen samples analyzed” based on the report’s altered conclusions