Evaluation of subjective irritation induced by soap materials
M. B. Finkey

Synopsis

A sensory questionnaire was employed to determine the subjective irritation perceived by subjects participating in clinical irritancy studies comparing pairs of bar soaps. The questionnaire consisted of a seven-point category scale for the attributes of dryness, tightness, itching, and burning\/stinging. The questionnaire allowed for detection of significant differences between soaps as described by these attributes. There was no strict relationship between erythema and self-perceived irritancy when any pair of treatments was compared, nor was there a consistent correlation among any of the attributes evaluated for any single soap bar. The questionnaire provided a simple, economical method for assessing subjective irritancy in conjunction with a clinical evaluation.

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