What question did this study set out to answer?

To evaluate the prevalence of sensitization to hair dye allergens and associated cross-reactivity patterns based on patch-test results.

February 8, 2026

Patterns of Sensitization and Cross-Reactivity in Hair Dye Allergy: An 18-Year Tertiary-Center Experience from Greece.

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Authors

ATAntonios TsimpidakisNational and Kapodistrian University of Athens KTKaterina TsaoutouAndreas Sygros Hospital ENElectra NicolaidouAndreas Sygros Hospital

Discussion

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Implication

Analysis demonstrates high rates of sensitization and cross-reactivity in individuals exposed to hair dyes, highlighting the need for improved safety measures.

Key Points

To evaluate the prevalence of sensitization to hair dye allergens and associated cross-reactivity patterns based on patch-test results.
Retrospective review of 666 patients tested at a specialized clinic from 2005 to 2023
Patch tests using European baseline and extended hairdresser series
Evaluation by established diagnostic criteria
Logistic regression for analyzing co-sensitization
82.4% of patients reacted to at least one allergen with a median of three positive reactions.
PPD was the most common allergen at 47.9%, followed by TDA at 35.9% and nickel at 41.1%.
Significant co-sensitization observed between PPD and related compounds like 4-aminophenol.
Hairdressers exhibited younger mean age and higher prevalence of hand dermatitis.

Cite This Study

Tsimpidakis et al. (2026) studied this question.

synapsesocial.com/papers/698828010fc35cd7a88471b7 https://doi.org/10.1177/17103568251408797

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Implication

Analysis demonstrates high rates of sensitization and cross-reactivity in individuals exposed to hair dyes, highlighting the need for improved safety measures.

Patterns of Sensitization and Cross-Reactivity in Hair Dye Allergy: An 18-Year Tertiary-Center Experience from Greece.

Discussion

Member takes

Implication

Key Points

Cite This Study

Patterns of Sensitization and Cross-Reactivity in Hair Dye Allergy: An 18-Year Tertiary-Center Experience from Greece.

Discussion

Member takes

Implication

Key Points

Cite This Study

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