Do delicious strawberries from the store taste worse than grass? Do you get spots when using cosmetics? Does your new computer fail on the second day? Do you think you're just unlucky? Not at all! Product manufacturers deceive us at every turn, promising better quality for less money. Beautiful packaging, captivating advertising, imaginary discounts - in the modern world it is not easy for a lonely consumer to resist temptations. In his laboratory, Leonid Rudnitsky examines the products that we use in everyday life: - Cosmetics - Clothing - Household chemicals - Modern materials for the interior In this book, the author shares with our research results and gives advice on how to determine the quality of a product at home and protect yourself from the harmful effects of modern things.