This study examines in some depth the influences of marketing mix, social factors, emergence of the metrosexual, evolution of femininity and masculinity, self-esteem and customer decision making on the male consumer behavior in purchasing cosmetic products in Sweden, particular in Karlstad. In do so, the theories of masculinity and femininity, customer behavior theory, customer decision making's theory, theory of metrosexual and theory of the four Ps in marketing mix strategy are employed as a theoretical framework and also adapted with theory of the self esteem involvement. A questionnaire was developed and distributed to men who are in the age range between 15-45 years old and living in UK. The total sample consists of 30 respondents. The results of the study indicated that the numbers of 'men who use cosmetic products' and 'who do not use' is not so much different. Most of male customers who using cosmetic products reveal that, the main reasons behind their using cosmetic products are for improving skin, personal care, attractiveness and self confident orderly. As a result, principally men's cosmetic products purchasing obtain the effects of the interaction between their personal demographics and attitude, the emergence of metrosexual and marketing mix (especially quality and attribute of products, price, product's ingredient, product brand and package of products). In contrast with men who do not use cosmetic products, there are two main reasons behind. Firstly products are not necessary in their point of view. Secondly this kind of products is expensive and lavish.