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Related Experiment Videos

Allergic contact dermatitis from propyl gallate: dose response comparison using various application methods.

A L Kraus1, J Stotts, L A Altringer

  • 1Procter and Gamble Company, Cincinnati, Ohio 45241.

Contact Dermatitis
|March 1, 1990
PubMed
Summary
This summary is machine-generated.

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Propyl gallate in deodorant caused allergic contact dermatitis. Sensitivity thresholds varied by application method, with occlusion increasing the reaction, informing patch testing for contact dermatitis.

Area of Science:

  • Dermatology
  • Toxicology
  • Cosmetic Science

Background:

  • Allergic contact dermatitis (ACD) is a significant concern in cosmetic product safety.
  • Propyl gallate, an antioxidant, is used in various consumer products, including deodorants.

Observation:

  • A single subject developed ACD from propyl gallate in a deodorant during controlled use testing.
  • Dose-response studies revealed varying sensitivity thresholds for propyl gallate based on application method and occlusion levels.

Findings:

  • The elicitation response to propyl gallate increased with higher levels of occlusion.
  • Sensitivity thresholds ranged from 0.0025% (occluded upper arm) to 0.015% (open antecubital fossa), with intermediate values for axillary application (shaved and unshaved).
  • Responsiveness remained stable over a 2-year monitoring period for occluded patches.

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Implications:

  • These findings highlight the critical role of occlusion in ACD elicitation.
  • The data provide valuable insights into the relationship between occlusive patch testing and clinical manifestations of contact dermatitis.
  • Understanding these variables is crucial for accurate risk assessment and safe formulation of products containing propyl gallate.