This study investigated adults’cognition on and usage of fermented cosmetics in Korea. The subject was 419men and women, that is to say, 316 women and 103 men, in Seoul and Gyeonggi-do. 2-weeks questionnairesurvey was done to investigate buying patterns and satisfaction of user group of fermented cosmetics, andcharacteristics and future access of the cosmetics of non-user group. More than half of the interviewees heardfermented cosmetics with less experience of the use. Men cognized the cosmetics less than women did, andthe former experienced less use. The interviewees thought of ‘safety ingredient for the skin of the cosmeticshaving plenty of effective ingredients’. The interviewees thought that efficacy and effect of fermentedcosmetics were not satisfactory at the use than expected that should be improved as soon as possible. But,many interviewees did not experience efficacy of fermented cosmetics enough yet: In other words, morethan half of the users made use of the cosmetics 1 to less than 3 months, and many interviewees wanted tobuy fermented cosmetics again in the future. And, 50.8% of non-user group of the fermented cosmetics didnot cognize difference of quality between common cosmetics and fermented cosmetics, and 47.5% of themthought that fermented cosmetics would have better quality, and more than half of the interviewees wantedto buy fermented cosmetics in the future: So, most of non-user group of fermented cosmetics wanted to buyfermented cosmetics and did not cognize advantages of the cosmetics enough. And, the interviewees whohad no idea of buying of fermented cosmetics said that they were satisfied with current cosmetics products,so that enough public relations of efficacy and effect of fermented cosmetics would be likely to let the usersbuy fermented cosmetics in the future. In this study, users cognized fermented cosmetics to have good imageand expectation effect and to have less use. And, users wanted to buy fermented cosmetics in the future, andcognized less quality difference between common cosmetics and fermented cosmetics to require not onlypublic relations of efficacy and effect of fermented cosmetics but also systematic strategy depending upongender and age. The study may help develop fermented cosmetics products according to buying behaviordepending upon gender and age to be basic material of the marketing.