By Jon J. Kabara
Introduces the foundations that increase the formula of goods unfastened from conventional preservatives through making a adverse setting for microorganisms with no diminishing caliber. The textual content emphasizes that the renovation of a product may be inherent within the formulation and examines using multifunctional chemical substances whose secondary features contain germistatic and germicidal characteristics.
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Additional info for Preservative-free and Self-preserving Cosmetic and Drug Products (Cosmetic Science and Technology Series)
Coli. The acid pH of cationic hair conditioners (around pH 4) and cationic conditioning agents (quats) contribute to the antimicrobial action of these products. , membrane destabilizing) effects of ionized fatty acids and the free alkalinity due to NaOH. , glycerol, salts), which decrease the aw. Chelating agents and phenolic antioxidants, such as butylated hydroxyanisole (BHA), become part of the product preservative system. 9 Survival Strategies of Microorganisms Microorganisms respond to the physical and chemical conditions in their environment.
Westfield, New Jersey Page 1 1 Principles for Product Preservation Jon J. Kabara Technology Exchange, Inc. Galena, Illinois Michigan State University East Lansing, Michigan Donald S. Orth Neutrogena Corporation Los Angeles, California Preservatives are used in aqueous cosmetics and drugs to prevent microbial contamination. While this has solved the problem of contamination in most instances, it has created other problems. No preservative is free of allergenic potential, and many consumers want ''natural" products that do not contain preservatives.
2. D. S. Orth. Handbook of Cosmetic Microbiology. Marcel Dekker, New York, 1993, pp. 1118. 3. D. S. Orth. The required D-value: Evaluating product preservation in relation to packaging and consumer use/abuse. Cosmet. Toiletr. 107(12):3943 (1992). 4. H. J. Eiermann et al. Prospective study of cosmetic reactions: 19771980. J. Am. Acad. Dermatol. 6(5):909917 (1982). 5. E. Schöpf and A. Baumgartner. Contact allergies to preservatives in cosmetic preparations. J. Appl. Cosmetol. 8:3949 (1990). 6. D.