Survey of cosmetologists’ knowledge of photoallergenic and phototoxic substances

Phototoxic and photoallergic reactions induced by ultraviolet A radiation belong to the group of exogenous photodermatoses. To induce changes in addition to sunlight, the presence of a photosensitizer is essential. These can be both externally applied and systemically ingested substances: drugs and supplements, plants, cosmetics, essential oils. The article aimed to assess cosmetologists’ knowledge of phototoxic and photoallergic substances. The study was carried out in a group of 103 cosmetologists based on an original questionnaire survey. Statistically significant differences were found in the level of knowledge between those with a master’s degree and a bachelor’s degree. The groups also differed in their willingness to expand their knowledge.