Studies to detect any adverse skin effects
under real use conditions

This type of test is based on realistic exposures to the product, and can evaluate the potential of the product to cause either irritation or sensitization (allergy). It has been described in several P&G publications (Rodriguez, et al. 1994 and Bannan, et al. 1992).

Volunteer panelists are assigned to one of two groups. In phase one, one group uses a test laundry detergent in place of their normal detergent for a period of 6 weeks. The other group uses a different product. At the end phase one, the panelists switch product. This eliminates bias in the study. In addition to normal laundry use, panelists are asked to use the product for hand laundering and stain pretreatment at least once a week for the duration of the test. The skin condition of the panelists is assessed for each product and compared with historical data on products with a well defined skin safety and mildness profile.

Result: Two powder detergents were tested in this study. Both were mild to skin.