Dermatol. praxi. 2013;7(2):50-55

Contact facial eczema - contact allergens

doc.MUDr.Eliška Dastychová, CSc.

LF MU a FN u sv. Anny v Brně, I. dermatovenerologická klinika Brno

Factors that allow the development of contact sensitisation in the facial area include irritation with external stimuli (i. e. climatic factors

including UV radiation, skin washing and cleansing, occupational factors) as well as the presence of dermatosis, particularly atopic eczema,

seborrhoeic dermatitis and rosaceiform dermatitis. The most common contact allergens in the facial area include components contained

in cosmetic products. Both active substances and excipients and perfumes can be involved. Sensitisation to active substances in hair dyes,

particularly to those that are among para-amino compounds, i. e. paraphenylenediamine, 4-toluenediamine and 4-aminophenol, has often

been encountered in recent years. Cocamidopropyl betaine, an emulsifier, is a major contact allergen in hair cosmetics. Also capable of

inducing sensitisation are substances of natural character, such as propolis, tea tree oil and plant extracts, particularly Compositae plant

extracts, that are among active substances of cosmetic products. Excipients that can induce sensitisation include preservatives (increased

sensitisation to Kathon CG has been observed in recent years) as well as antioxidant and emulsifying agents. In patients with facial dermatitis,

there is a possibility of sensitisation to both active substances (e.g. antibiotics, corticosteroid substances, etc.) and excipients from the

pharmaceutical preparations used. Nickel, usually from earrings made of imitation jewellery, can also induce sensitisation. Occupational

allergens particularly include disinfectants (vapours), epoxy resins, and/or others, according to the patient's job position.

character, excipients.

Keywords: contact facial eczema, face, contact allergens, paraphenylenediamine, cocamidopropyl betaine, substances of natural

Published: July 1, 2013  Show citation