The Preservation of Shampoos
D. M. Bryce , R. Smart

Synopsis

Evidence is presented that difficulty is experienced in shampoo preservation, due to the effect of micellar solubilisation.

The nature of the preservative requirement is discussed and performance of phenyl mercuric nitrate and formaldehyde briefly examined.

Bronopol , a new preservative, which is active in the presence of anionic and nonionic surfactant micelles, appears to have application in this field.

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