Common Allergens Identified Based on Patch Test Results in Patients with Suspected Contact Dermatitis of the Scalp

This study identified the most common allergens in hair products linked to scalp allergic contact dermatitis, with hair dyes, shampoos, and conditioners primarily associated with the condition.

This study examined the sensitization potential of common hair care products and found that certain ingredients, like cobalt chloride and nickel sulfate, frequently cause allergic reactions in individuals with hair diseases, providing essential insights for personalized treatment strategies.

This review examines scalp contact dermatitis, attributing most positive patch test reactions to hair dyes, hair cleansing products, and medicaments, but presents no new research findings.

This study found that 9% of tested patients had positive patch test reactions linked to hair care products, with most reactions clinically relevant and commonly involving allergens like p-phenylenediamine.

In this study, patients with scalp seborrheic dermatitis exhibited distinct patterns of allergen sensitization tied to symptoms, impaired skin barrier, and altered microbiota, emphasizing the need to consider allergen exposure, barrier status, and microbial balance when interpreting patch test results.