Aleksandra Sędzikowska1, Katarzyna Bartosik2, Renata Przydatek-Tyrajska2,3, Monika Dybicz4. 1. Department of General Biology and Parasitology, Medical University of Warsaw, Chałubińskiego 5, 02-004, Warszawa, Poland. aleksandra.sedzikowska@wum.edu.pl. 2. Chair and Department of Biology and Parasitology, Medical University of Lublin, Radziwiłłowska 11, 20-080, Lublin, Poland. 3. Reno-Med Non-Public Health Care, Podkowy 87, 04-937, Warszawa, Poland. 4. Department of General Biology and Parasitology, Medical University of Warsaw, Chałubińskiego 5, 02-004, Warszawa, Poland.
Abstract
PURPOSE: The aim of the study was to examine Demodex survival in makeup cosmetics, i.e., powder cream, mascara, and lipstick, and to determine whether cosmetics shared with others can be a source of D. folliculorum infection. METHODS: Live D. folliculorum adults were placed in cosmetic samples and their motility was observed under a microscope. The mites were fully or partially immersed in the powder cream and lipstick, and only partially immersed in the mascara. Partial immersion means that only the opisthosoma was covered by the cosmetic, whereas the gnathosoma and podosoma had no contact with the cosmetic. Cessation of motility was regarded as a sign of death. RESULTS: In the control (mites placed on a microscope slide with no cosmetics), the survival time was 41.2 h. D. folliculorum that were immersed fully or partially in the lipstick substrate were viable for 38.5 h and 148 h, respectively. The survival time of the mites at full and partial immersion in the powder cream was 0.78 h and 2.16 h, respectively. The average survival time in the mascara was 21 h. CONCLUSIONS: Makeup cosmetics used by different individuals at short intervals (from several hours to several days) can be a source of transmission of Demodex sp. mites.
PURPOSE: The aim of the study was to examine Demodex survival in makeup cosmetics, i.e., powder cream, mascara, and lipstick, and to determine whether cosmetics shared with others can be a source of D. folliculoruminfection. METHODS: Live D. folliculorum adults were placed in cosmetic samples and their motility was observed under a microscope. The mites were fully or partially immersed in the powder cream and lipstick, and only partially immersed in the mascara. Partial immersion means that only the opisthosoma was covered by the cosmetic, whereas the gnathosoma and podosoma had no contact with the cosmetic. Cessation of motility was regarded as a sign of death. RESULTS: In the control (mites placed on a microscope slide with no cosmetics), the survival time was 41.2 h. D. folliculorum that were immersed fully or partially in the lipstick substrate were viable for 38.5 h and 148 h, respectively. The survival time of the mites at full and partial immersion in the powder cream was 0.78 h and 2.16 h, respectively. The average survival time in the mascara was 21 h. CONCLUSIONS: Makeup cosmetics used by different individuals at short intervals (from several hours to several days) can be a source of transmission of Demodex sp. mites.
Entities:
Keywords:
Blepharitis; Demodex folliculorum; Demodex transmission; Demodicosis; Transmission via cosmetics