Contact allergy to hair cosmetic allergens in Thailand

Research output: Contribution to journalArticle

Abstract

BACKGROUND: Hair cosmetics such as hair dyes, bleaching, waving, and cleansing products are composed of numerous chemical ingredients. Allergic reactions to these contact allergens, other than p-phenylenediamine, are rarely reported.

OBJECTIVES: To study the incidence of patch test reactions to hair cosmetic allergens and identify the factors associated with hair cosmetic allergy in Thailand.

METHODS: We retrospectively reviewed the case records of patients who underwent patch testing from 2009 to 2018. Patients with at least one positive patch test reaction to a potential contact allergen associated with hair cosmetic ingredients were studied.

RESULTS: Overall, 2842 patients were patch tested. Of the hair cosmetic allergen categories, preservatives had the highest rate of positive reactions, followed by surfactants and hair dyes. Perming agents were less problematic in comparison. The hands, head, and neck were the predominately affected sites of allergic reactions to hair cosmetic ingredients.

CONCLUSIONS: Preservatives, surfactants, and hair dyes are important contact allergens, whereas perming agents are less likely to cause allergic reactions. Hair cosmetic ingredients are regulated by national agencies, which influences their extent of exposure and rates of contact allergies. Further continuous observation of hair cosmetic allergy is needed to provide the best patient care.

Details

Authors
External organisations
  • Mahidol University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Dermatology and Venereal Diseases

Keywords

  • Adult, Allergens/adverse effects, Dermatitis, Allergic Contact/epidemiology, Dermatitis, Occupational/epidemiology, Facial Dermatoses/epidemiology, Female, Hair Bleaching Agents/adverse effects, Hair Dyes/adverse effects, Hand Dermatoses/epidemiology, Humans, Incidence, Male, Middle Aged, Neck, Patch Tests, Preservatives, Pharmaceutical/adverse effects, Retrospective Studies, Risk Factors, Scalp Dermatoses/epidemiology, Surface-Active Agents/adverse effects, Thailand/epidemiology
Original languageEnglish
Pages (from-to)426-431
Number of pages6
JournalContact Dermatitis
Volume81
Issue number6
Publication statusPublished - 2019 Dec
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes