Honestly, if you have an interview you should prepare by going to the Clarins website, and reading everything you can about the company, its history, its philosophy, goals, and on some of the main products they carry. Just reciting some products that random people list is not going to make a good impression. It's normal that a new job candidate will not know everything about the company, but if you spend some time on their website reading everything you can about them, that is going to impress them more. You don't have to say that you use a bunch of their products if you don't, I think they will be able to tell pretty easily if they ask you more detailed questions, and it turns out you don't know anything about. Know what I mean? Just read and digest as much company information as you can, maybe print out some things on their philosophy etc, and try to incorporate that into your interview. It will show them that you've done some homework and that you are genuinely interested in their line.