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Updated: Jul 5, 2026
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High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
Published on: November 15, 2013
[Not Available]
N Moulai-Mostefa1, A Hadj Sadok, N Berrayah
1Institut Sciences de l'Ingénieur, Centre Universitaire Yahia Fares, Ain D'Heb, 26001 Médéa, Algeria. moulai.nadji@yahoo.fr
International Journal of Cosmetic Science
|May 23, 2008
Summary
This study optimized a cold depilatory emulsion using calcium thioglycolate. An emulsifying polymer created a stable, effective depilatory cream with desirable rheological properties.
Area of Science:
- Cosmetic Science
- Formulation Chemistry
- Rheology
Context:
- Depilatory creams are widely used cosmetic products.
- Optimizing formulation is key for product stability and efficacy.
- Calcium thioglycolate is a common active ingredient in depilatories.
Purpose:
- To optimize a cold formulation of a depilatory emulsion containing calcium thioglycolate.
- To achieve characteristics similar to a reference product.
- To utilize a cubic simplex method for efficient experimental design.
Summary:
- A cubic simplex method was employed to optimize the depilatory emulsion formulation.
- The rheological behavior of the creams followed the Herschel-Bulkley model.
- Rheological measurements and stability tests confirmed that an emulsifying polymer yielded a stable and effective depilatory cream at high pH.
Impact:
- Reduced and optimized the number of experiments required for formulation development.
- Demonstrated the successful creation of a stable and effective depilatory cream.
- Provided insights into the rheological properties and stability of depilatory emulsions.
