Preservation of "Atypical" Cosmetic Product Systems
By: John I. Yablonski and Sharon E. Mancuso, Bio-Control Service Group Inc.
Posted: May 6, 2003, from the April 2002 issue of Cosmetics & Toiletries.
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8 pages available as a PDF download or printed copies mailed to you
Article Keywords:
- preservatives
- preservation
- challenge testing
- water activity
- powders
- hydroalcoholics
- anhydrous gels
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We can loosely define "atypical" cosmetic products as those product forms that do not naturally conform to the "typical" o/w formulation characteristics exhibited by the vast majority of cosmetic products currently on the market.
Over the years, there has been considerable controversy regarding both the general philosophy of needing to preserve atypical products and, if the need is considered to be valid, how to accomplish this without artificially disrupting the integrity of the product system under evaluation.
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