Background: Hairdressers are occupationally exposed to many allergenic and irritating substances. Additionally, hairdressing apprentices are exposed to the same allergens as professional hairdressers, due to the fact that vocational training starts in the beginning of the education. This study was undertaken to investigate early occurrence of sensitization to occupational allergens in hairdressing apprentices before the onset of the vocational training. Material and Methods: Three hundred and seven hairdressing apprentices were assessed using a questionnaire and skin prick tests (SPTs) to common and occupational allergens. The level of total and serum specific immunoglobulin E (IgE) to occupational allergens was evaluated and spirometry was performed. Results: At least one skin and/or respiratory and/or conjunctival symptom was reported by 29.9% of subjects. Among subjects with at least one symptom, 28.2% of them were atopic whereas among 43.4% of them total IgE level was elevated. Atopy was found in 20% cases. In the case of one apprentice, positive SPT for paraphenylenediamine was found. Nearly 33% of apprentices had elevated total IgE level and 5 of them had specific IgE for occupational allergens. Conclusions: The study revealed that hairdressing apprentices might be sensitized to occupational allergens even before the beginning of vocational training, due to prior non-professional exposure to hairdressing agents. Furthermore, many of them report skin, respiratory and conjunctival symptoms, often connected with chronic disease diagnosis. Thus, candidates for hairdressers should be examined thoroughly before the start of the education and tests for allergy to hairdressing substances are indicated. Med Pr 2016;67(5):567-575

Hairdressing is one of the most developing branch of the service industry in Poland. Providing representatives of this occupational group with preventive health care services it should be remembered that they are at risk of skin and respiratory diseases, which occur due to a quite frequent exposure to harmful agents in the work environment of hairdressers and hairdressing apprentices. Interestingly, a much lower number of researches concentrate on respiratory symptoms than on skin disorders in hairdressers. The authors of this article have carried out the first Polish follow-up study focused not only on skin disorders but also on respiratory tract symptoms in hairdressing apprentices. The results of the study have been reported in other publications while this paper presents a literature review based on EBSCO and PubMed databases, Elsevier and contained articles (on the subject discussed in this paper). On the basis of information obtained from the authors' own research evidence and from the literature review, the guidelines for the preventive health care of hairdressing apprentices were developed. It was confirmed that neither determination of allergen-specific immunoglobulin E (IgE) nor performance of skin prick tests (SPTs) and patch tests for hairdressing factors are necessary. They should be performed as a part of preventive medical examination only in those apprentice candidates and trainees in this profession who report work-related symptoms and it is suspected that they result from exposure to particular factor in the work environment. Med Pr 2017;68(5):677-687.