Calvin Klein ck one is a scent that I first tried about 15 years ago when I was a teenager. I loved the scent then and I still like it now. It is Unisex which means it can be used by Men as a cologne or by Women as a perfume. I tried it and so did my Husband. I personally liked it better on me. His cologne that he wears is a lot stronger and more masculine. The ck one fell a little flat in comparison. I do love it as a perfume though. It smells sweet on my skin and the violets, jasmine and Lilly scents really shine through.