History of whoo website in english: http://www.whoo.co.kr/global/english/etc/sitemap.html
It carries a few lines: (pic credit to www.whoo.co.kr)
there's the basic gongjinhyang line meant for ages 30 and up and for dry skin. Apparently, many dry skinned women find this line makes their skin so dewy and soft. Women in korea normally have dry skin so many of the korean skin care are geared towards dry skin users ( i think!).
The seol line - this is the infamous whitening line!! the one that i've hauling from gmarket. apparently it does wonders in terms of literal whitening and removing pigmentation. Meant for all skin types.
The other famous line is the bichup line - this consists of just a serum (ja saeng essence) and it is a must to use this for beautiful skin! It can heal acne, troubled skin. It can also provide hydration to dry skin and helps in wrinkle improvement. It helps in strengthening weakened skin barrier and so even sensitive skin types can use this! an all-in-one essence/serum! definitely not to be missed by all girls.