Assessment of the composition of some personal hygiene (on the example of shampoos) regarding the negative effect on the human body

All shampoos contain various harmful components that accumulate in the body, which can harm human health in general. They can cause allergies, provoke aging, lead to nervous disorders and cardiovascular disease. But, despite this, these substances can not be excluded from the composition of modern shampoos, as without this cosmetics will lose their properties. Choosing the right shampoo will help reduce the risk of harmful effects, but you need to know how it can adversely affect the health of an ingredient. The result is the recommended lists of specific shampoos that take into account all these aspects. Consumers who care about their health should be directly interested in such lists.The aim is to identify the safest groups of shampoos in terms of their content of substances dangerous to human health. The object of personal hygiene products is shampoos (25 items). The subject of the study is the description of the safest groups of shampoos for consumers, taking into account their price and subjective assessment of consumers. The initial data was information about the composition of each of the shampoos and toilet soaps, specified by the manufacturer on the product packaging of each tested hygienic product. During the study, comparative-descriptive, graphical, and statistical (method of K-means cluster analysis) methods of processing and providing information were used. The results of the work are of direct practical importance, as they represent a direct recommendation for the consumer, which is the need to choose personal hygiene products (shampoo) among the proposed lists of the safest samples with the lowest price and best consumer properties.