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Rational formulation design.

M E Lane1, J Hadgraft, G Oliveira

  • 1Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK. majella.lane@btinternet.com

International Journal of Cosmetic Science
|August 14, 2012
PubMed
Summary
This summary is machine-generated.

Understanding cosmetic formulation vehicles is key for active ingredient delivery. Matching the active ingredient with the optimal vehicle enhances skin penetration and efficacy.

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Area of Science:

  • Cosmetic Science
  • Dermatology
  • Pharmaceutics

Background:

  • Effective targeting of active ingredients in the skin is crucial for cosmetic efficacy and claim substantiation.
  • While skin permeation principles are known, the vehicle's role in cosmetic delivery, especially at relevant doses, is less understood.
  • The fate of formulation components, not just the active, impacts overall skin delivery.

Purpose of the Study:

  • To emphasize the importance of understanding the vehicle's role in cosmetic formulation efficacy.
  • To critically evaluate approaches for identifying optimal vehicles for skin delivery.
  • To highlight the 'formulating for efficacy' (FFE) concept and its application.

Main Methods:

  • Discussion of the necessity to track formulation components and active ingredients on the skin.
  • Critical review of 'formulating for efficacy' (FFE) principles.
  • Highlighting emerging techniques for assessing vehicle distribution in and on the skin.

Main Results:

  • Recent data indicate that the residence time of formulation constituents significantly influences the active ingredient's fate.
  • The 'formulating for efficacy' (FFE) approach matches actives with vehicles based on polarity/solubility of skin, active, and vehicle.
  • Techniques providing insight into vehicle distribution are increasingly important.

Conclusions:

  • Understanding the vehicle's interaction with the skin is essential for optimizing cosmetic product performance.
  • The FFE strategy offers a scientifically grounded method for developing more effective cosmetic formulations.
  • Advanced analytical techniques are vital for elucidating vehicle behavior and improving skin delivery systems.